[206] | Daniela Pohl, Abdelhamid Bouchachia, Hermann Hellwagner, Automatic Identification of Crisis-Related Sub-Events using Clustering, In 11th International Conference on Machine Learning and Applications (Jiawei Han, Taghi M Khoshgoftaar, Xingquan Zhu, eds.), IEEE, Los Alamitos, CA, USA, pp. 333-338, 2012.
[bib][url] [pdf] [abstract]
Abstract: Social media are becoming an important instrument for supporting crisis management, due to their broad acceptance and the intensive usage of mobile devices for accessing them. Social platforms facilitate collaboration among the public during a crisis and also support after-the-fact analysis. Thus, social media are useful for the processes of understanding, learning, and decision making. In particular, having information from social networks in a suitable, ideally summarized, form can speed up such processes. The present study relies on Flickr and YouTube as social media and aims at automatically identifying individual sub-events within a crisis situation. The study applies a two-phase clustering approach to detect those sub-events. The first phase uses geo-referenced data to locate a sub-event, while the second phase uses the natural language descriptions of pictures and videos to further identify the ”what-about” of those sub-events. The results show high potential of this social media-based clustering approach for detecting crisis-related sub-events.
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[205] | Daniela Pohl, Abdelhamid Bouchachia, Hermann Hellwagner, Supporting Crisis Management via Sub-Event Detection in Social Networks, In IEEE 21st International Workshop on Enabling Technologies: Infrastructure for Collaborative Enterprises (WETICE) (Michel Diaz, Patrick Senac, eds.), IEEE, Toulouse, Fance, pp. 373 -378, 2012.
[bib] [doi] [abstract]
Abstract: Social networks give the opportunity to gather and share knowledge about a situation of relevance. This so called user-generated content is getting increasingly important during crisis management. It facilitates the collaboration with citizens or parties involved from the very beginning of the crisis. The information captured in form of images, text or videos is a valuable source of identifying sub-events of a crisis. In this study, we use metadata of images and videos collected from Flickr and YouTube to extract sub-events in crisis situations. We investigate the suitability of clustering techniques to detect sub-events. In particular two algorithms are evaluated on several data sets related to crisis situations. The results show the high potential of the approach proposed.
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[204] | Daniela Pohl, Abdelhamid Bouchachia, Hermann Hellwagner, Automatic Sub-Event Detection in Emergency Management using Social Media, In Proceedings of the 21st International Conference Companion on World Wide Web (Alain Mille, Fabien Gandon, Jacques Misselis, eds.), ACM, New York, NY, USA, pp. 683-686, 2012.
[bib] [pdf] [abstract]
Abstract: Emergency management is about assessing critical situations, followed by decision making as a key step. Clearly, information is crucial in this two-step process. The technology of social (multi)media turns out to be an interesting source for collecting information about an emergency situation. In particular, situational information can be captured in form of pictures, videos, or text messages. The present paper investigates the application of multimedia metadata to identify the set of sub-events related to an emergency situation. The used metadata is compiled from Flickr and YouTube during an emergency situation, where the identification of the events relies on clustering. Initial results presented in this paper show how social media data can be used to detect different sub-events in a critical situation.
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[203] | Christopher Mueller, Daniele Renzi, Stefan Lederer, Stefano Battista, Christian Timmerer, Using Scalable Video Coding for Dynamic Adaptive Streaming over HTTP in Mobile Environments, In Proceedings of the 20th European Signal Processing Conference (EUSIPCO12) (Corneliu Burileanu, Béatrice Pesquet-Popescu, eds.), European Signal Processing (EURASIP) Society, Bucharest, Romania, pp. 2208-2212, 2012.
[bib] [pdf] [abstract]
Abstract: Dynamic Adaptive Streaming over HTTP (DASH) is a convenient approach to transfer videos in an adaptive and dynamic way to the user. As a consequence, this system provides high bandwidth flexibility and is especially suitable for mobile use cases where the bandwidth variations are tremendous. In this paper we have integrated the Scalable Video Coding (SVC) extensions of the Advanced Video Coding (AVC) standard into the recently ratified MPEG-DASH standard. Furthermore, we have evaluated our solution under restricted conditions using bandwidth traces from mobile environments and compared it with an improved version of our MPEG-DASH implementation using AVC as well as major industry solutions.
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[202] | Christopher Mueller, Stefan Lederer, Christian Timmerer, An Evaluation of Dynamic Adaptive Streaming over HTTP in Vehicular Environments, In Proceedings of the Fourth Annual ACM SIGMM Workshop on Mobile Video (MoVid12) (Mohamed Hefeeda, Cheng-Hsin Hsu, Mainak Chatterjee, Nalini Venkatasubramanian, Samrat Ganguly, eds.), ACM, New York, NY, USA, pp. 37-42, 2012.
[bib] [pdf] [abstract]
Abstract: MPEGs' Dynamic Adaptive Streaming over HTTP (MPEG-DASH) is an emerging standard designed for media delivery over the top of existing infrastructures and able to handle varying bandwidth conditions during a streaming session. This requirement is very important, specifically within mobile environments and, thus, DASH could potentially become a major driver for mobile multimedia streaming. Hence, this paper provides a detailed evaluation of our implementation of MPEG DASH compared to the most popular propriety systems, i.e., Microsoft Smooth Steaming, Adobe HTTP Dynamic Streaming, and Apple HTTP Live Streaming. In particular, these systems will be evaluated under restricted conditions which are due to vehicular mobility. In anticipation of the results, our prototype implementation of MPEG-DASH can very well compete with state-of-the-art solutions and, thus, can be regarded as a mature standard ready for industry adaption.
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[201] | Christopher Mueller, Stefan Lederer, Christian Timmerer, A Proxy Effect Analysis and Fair Adaptation Algorithm for Multiple Competing Dynamic Adaptive Streaming over HTTP Clients, In Proceedings of the IEEE Conference on Visual Communications and Image Processing Conference (VCIP 2012) (Kiyoharu Aizawa, Jay Kuo, Zicheng Liu, eds.), IEEE, San Diego, CA, USA, pp. 6, 2012.
[bib][url] [pdf] [abstract]
Abstract: Multimedia streaming technologies based on the Hypertext Transfer Protocol (HTTP) are very popular and used by many content providers such as Netflix, Hulu, and Vudu. Recently, ISO/IEC MPEG has ratified Dynamic Adaptive Streaming over HTTP (DASH) which extends the traditional HTTP streaming with an adaptive component addressing the issue of varying bandwidth conditions that users are facing in networks based on the Internet Protocol (IP). Additionally, industry has already deployed several solutions based on such an approach which simplifies large scale deployment because the whole streaming logic is located at the client. However, these features may introduce drawbacks when multiple clients compete for a network bottleneck due to the fact that the clients are not aware of the network infrastructure such as proxies or other clients. This paper identifies these negative effects and the evaluation thereof using MPEG-DASH and Microsoft Smooth Streaming. Furthermore, we propose a novel adaptation algorithm introducing the concept of fairness regarding a cluster of clients. In anticipation of the results we can conclude that we achieve more efficient bottleneck bandwidth utilization and less quality switches.
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[200] | Stefan Lederer, Christopher Mueller, Christian Timmerer, Dynamic Adaptive Streaming over HTTP Dataset, In Proceedings of the Third Annual ACM SIGMM Conference on Multimedia Systems (MMSys12) (Mark Claypool, Carsten Griwodz, Ketan Mayer-Patel, eds.), ACM, New York, NY, USA, pp. 89-94, 2012.
[bib] [pdf] [abstract]
Abstract: Adaptive HTTP streaming got lot of attention in recent years and with dynamic adaptive streaming over HTTP (DASH) a standard is available. Many papers cover this topic and present their research results, but unfortunately all of them use their own private dataset which – in most cases – is not publicly available. Hence, it is difficult to compare, e.g., adaptation algorithms in an objective way due to the lack of a common dataset which shall be used as basis for such experiments. In this paper, we present our DASH dataset featuring our DASHEncoder, an open source DASH content generation tool. We also provide basic evaluations of the different segment lengths, the influence of HTTP server settings, and, in this context, we show some of the advantages as well as problems of shorter segment lengths.
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[199] | Dejan Milojicic, Martin Arlitt, Doree Duncan Seligmann, George Thiruvathukal, Christian Timmerer, Innovation Mashups: Academic Rigor Meets Social Networking Buzz, In Computer, IEEE Computer Society, vol. 45, no. 9, Los Alamitos, CA, USA, pp. 101-105, 2012.
[bib] [doi] [pdf] [abstract]
Abstract: Exploring new options for publishing and content delivery offers an enormous opportunity to improve the state of the art and further modernize academic and professional publications.
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[198] | Yaning Liu, Joost Geurts, Benjamin Rainer, Stefan Lederer, Christopher Mueller, Christian Timmerer, DASH over CCN: A CCN use-case for a Social Media based collaborative project, In CCNx Community Meeting (CCNxConn 2012) (Giovanna Carofiglio, ed.), Parc, Sophia Antipolis, pp. 1-1, 2012.
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[197] | Stefan Lederer, Christopher Mueller, Benjamin Rainer, Markus Waltl, Christian Timmerer, An open source MPEG DASH evaluation suite, In Proceedings of the IEEE Conference on Visual Communications and Image Processing Conference (VCIP 2012) (Ebroul Izquierdo, Xin Wang, eds.), IEEE, San Diego, CA, USA, pp. 1-1, 2012.
[bib][url] [pdf] [abstract]
Abstract: In this paper we demonstrate our MPEG-DASH evaluation suite, which comprises several components on the client side as well as on the server side. The major client components are the VLC DASH plugin, libDASH, and DASH-JS, a JavaScript-based DASH client. These tools enable performance tests on various platforms, e.g., Windows and Linux as well as mobile platforms such as Android. Moreover, due to their flexible structure it is possible to integrate adaptation logics and evaluate them under consistent conditions. On the server side we provide the content generation tool DASHEncoder, our MPEG-DASH datasets well as the MPEG-DASH conformance validator.
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[196] | Stefan Lederer, Christopher Mueller, Christian Timmerer, Towards Peer-Assisted Dynamic Adaptive Streaming over HTTP, In Proceedings of the 19th International Packet Video Workshop (PV 2012) (Christine Guillemot, Jacob Chakareski, Eckehard Steinbach, eds.), IEEE, Munich, Germany, pp. 1-6, 2012.
[bib] [pdf] [abstract]
Abstract: This paper presents our peer-assisted Dynamic Adaptive Streaming over HTTP (pDASH) proposal as well as an evaluation based on our DASH simulation environment in comparison to conventional approaches, i.e., non-peer-assisted DASH. Our approach maintains the standard conformance to MPEG-DASH enabling an easy and straightforward way of enhancing a streaming system with peer assistance to reduce the bandwidth and infrastructure requirements of the content/service provider. In anticipation of the results our system achieves a bandwidth reduction of Content Distribution Networks (CDN) and as a consequence the corresponding infrastructure costs of the content/service providers by up to 25% by leveraging the upstream capacity of neighboring peers. Furthermore, the cost savings have been evaluated using a cost model that is based on the current Amazon CloudFront pricing scheme. Furthermore, we have also evaluated the performance impact that various combinations of quality levels of the content could have in a peer-assisted streaming system as well as the client behavior in such an environment.
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[195] | Robert Kuschnig, Congestion-Aware Quality-Adaptive Streaming of Scalable Video, PhD thesis, Klagenfurt University, pp. 186, 2012.
[bib] [pdf] [abstract]
Abstract: Internet video streaming is a hot topic in multimedia systems. A large variety of devices (computers, mobile phones, TVs, etc.) are connected to the Internet via wired or wireless networks and are capable of receiving and decoding HD video content. To enable new services like HD video streaming (e.g., online video rental), the Internet’s infrastructure was enhanced. But the Internet is still a best-effort network, which does not implement quality-of-service or admission control, resulting in time-varying bandwidth and packet delay, packet loss and network congestion. Because video streaming accounts for a considerable amount of the Internet’s traffic, video streaming needs additionally to be congestion-aware, to avoid a congestion collapse of the Internet. The Transmission Control Protocol (TCP) can adapt to changing network conditions and is currently the de facto standard protocol for congestion-aware and reliable data transmission in the Internet. This fact gave TCP-based video streaming a huge momentum. Consequently, this thesis investigates TCP-based adaptive video streaming for the Internet. The main goal is to provide a solution for congestion-aware video streaming, while still being able to achieve a reasonable performance in error-prone networks. To complement existing work on congestion-aware adaptive streaming, this thesis makes six contributions. (1) The baseline performance of TCP-based adaptive streaming is identified by means of an evaluation of different adaptive streaming approaches. The results represent a reference for further investigations. (2) An investigation on the influence of TCP’s behavior in presence of packet loss on the video streaming performance. (3) To overcome the shortcomings of TCP-based video streaming (single TCP connections fail to deliver a good performance in case of packet loss), a new approach to video streaming based on multiple request-response streams was introduced. The novelty of this system is that it is able to make use of multiple HTTP-based request-response streams while still providing TCP-friendliness. (4) A performance model of the HTTP-based request-response streams was developed, to estimate the influence of the system parameters and the network characteristics on the throughput performance. (5) A comprehensive evaluation of the HTTP-based request-response streams under diverse network conditions was conducted, to validate the model’s estimations. Additionally, the TCP-friendliness was evaluated, showing that request-response streaming systems can be configured to achieve TCP-friendliness. (6) A cellular network with high bandwidth fluctuations and RTTs was used to investigate the performance of the request-response streaming system in a mobile video streaming scenario. The results indicate that the streaming system can make good use of the available bandwidth, while the number of quality switches is kept low. While aggregating multiple TCP connections to improve the TCP streaming performance is quite common, usually the improvement comes at the cost of high deployment effort. By placing the streaming logic at the client, request-response streams can avoid this complexity. Additionally, this client-driven approach responds faster to changing network conditions and enables easy recovery from connection stalls or aborts, because the control loop is at the client. To improve the network efficiency and the scalability in terms of number of clients served, HTTP-based request-response streams can utilize HTTP proxies and caches.
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[194] | Ingo Kofler, Robert Kuschnig, Hermann Hellwagner, Implications of the ISO Base Media File Format on Adaptive HTTP Streaming of H.264/SVC, In Proceedings of the 9th IEEE Consumer Communications and Networking Conference (CCNC) (Behrooz Shirazi, ed.), IEEE, Los Alamitos, CA, USA, pp. 5, 2012.
[bib][url] [pdf] [abstract]
Abstract: HTTP streaming has gained significant attraction in the last few years. Currently many commercial as well as standardized streaming systems are already offering adaptive streaming. In most cases, the adaptation is achieved by switching between separately encoded video streams in different qualities. In contrast to that, this paper focuses on the applicability of scalable video coding based on the H.264/SVC standard for adaptive HTTP streaming. Recent work has already highlighted the conceptual advantages like better cache utilization, fine-grained bit rate scalability, and lower storage requirements. This paper discusses the actual realization and design options for implementing priority streaming using the ISO Base Media File Format (BMFF). We propose three different strategies for organizing the scalable video bit stream that consider both the possibilities as well as limitations of the ISO BMFF. The proposed strategies are discussed and evaluated both conceptually and quantitatively. For that purpose, we provide a detailed analysis based on modeling both the overhead of the file format and the HTTP encapsulation. The results for all three priority streaming strategies show that the limitations of the ISO BMFF result in a high relative overhead in the case of low bit rate content. However, when applied to high quality content, priority streaming of H.264/SVC can be implemented at a very low cost. Depending on the number of layers and the offered scalability dimensions, different strategies should be chosen to minimize the overhead. Based on the analytical model and the discussion, this paper provides guidance for selecting the most efficient strategy.
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[193] | Tobias Hoßfeld, Raimund Schatz, Martin Varela, Christian Timmerer, Challenges of QoE Management for Cloud Applications, In Communications Magazine, IEEE, IEEE Communications Society, vol. 50, no. 4, New York, NY, USA, pp. 28-36, 2012.
[bib] [doi] [pdf] [abstract]
Abstract: Cloud computing is currently gaining enormous momentum due to a number of promised benefits: ease of use in terms of deployment, administration, and maintenance, along with high scalability and flexibility to create new services. However, as more personal and business applications migrate to the cloud, service quality will become an important differentiator between providers. In particular, quality of experience as perceived by users has the potential to become the guiding paradigm for managing quality in the cloud. In this article, we discuss technical challenges emerging from shifting services to the cloud, as well as how this shift impacts QoE and QoE management. Thereby, a particular focus is on multimedia cloud applications. Together with a novel QoE-based classification scheme of cloud applications, these challenges drive the research agenda on QoE management for cloud applications.
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[192] | Hermann Hellwagner, Scalable Coherent Interface (SCI), Chapter in Encyclopedia of Parallel Computing (David Padua, ed.), Springer, Berlin, Heidelberg, New York, pp. 9, 2012.
[bib] [abstract]
Abstract: Scalable Coherent Interface (SCI) is the specification (standardized by ISO/IEC and the IEEE) of a high-speed, flexible, scalable, point-to-point-based interconnect technology that was implemented in various ways to couple multiple processing nodes. SCI supports both the message-passing and shared-memory communication models, the latter in either the cache-coherent or non-coherent variants. SCI can be deployed as a system area network for compute clusters, as a memory interconnect for large-scale, cache-coherent, distributed-shared-memory multiprocessors, or as an I/O subsystem interconnect.
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[191] | Michael Grafl, Christian Timmerer, Markus Waltl, George Xilouris, Nikolaos Zotos, Daniele Renzi, Stefano Battista, Alex Chernilov, Distributed Adaptation Decision-Taking Framework and Scalable Video Coding Tunneling for Edge and In-Network Media Adaptation, In Proceedings of the 2012 IEEE International Conference on Telecommunications and Multimedia (TEMU 2012) (Evangelos Pallis, Vassilios Zacharopoulos, Anastasios Kourtis, eds.), IEEE, Los Alamitos, CA, USA, pp. 6, 2012.
[bib] [doi] [pdf] [abstract]
Abstract: Existing and future media ecosystems need to cope with the ever-increasing heterogeneity of networks, devices, and user characteristics collectively referred to as (usage) context. The key to address this problem is media adaptation to various and dynamically changing contexts in order to provide a service quality that is regarded as satisfactory by the end user. The adaptation can be performed in many ways and at different locations, e.g., at the edge and within the network resulting in a substantial number of issues to be integrated within a media ecosystem. This paper describes research challenges, key innovations, target research outcomes, and achievements so far for edge and in-network media adaptation by introducing the concept of Scalable Video Coding (SVC) tunneling.
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[190] | Evsen Yanmaz, Robert Kuschnig, Christian Bettstetter, Channel Measurements Over 802.11a-Based UAV-to-Ground Links, In Proceedings of the GlobeCom 2010 (Wi-UAV Workshop) (Jonathan How, Christian Wietfeld, eds.), IEEE, Piscataway, NJ, USA, pp. 5, 2011.
[bib] [pdf] [abstract]
Abstract: The distribution of audio-visual content over the Internet has become very popular in recent years. However, due to the bandwidth requirements of videos in high definition, a costefficient distribution is desirable. In this paper we present a low-cost consumer electronics set-top box for streaming live video content using cost-efficient P2P networks. The main features of the set-top box include content discovery, highquality playback, easy user management, and social interaction.
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[189] | Evsen Yanmaz, Robert Kuschnig, Markus Quaritsch, Christian Bettstetter, Bernhard Rinner, On Path Planning Strategies for Networked Unmanned Aerial Vehicles, In Proceedings of the IEEE Conference on Computer Communications Workshops, INFOCOM M2MCN, 2011 (Lionel Ni, Wenjun Zhang, eds.), IEEE, Piscataway, NJ, USA, pp. 212-216, 2011.
[bib] [pdf] [abstract]
Abstract: The distribution of audio-visual content over the Internet has become very popular in recent years. However, due to the bandwidth requirements of videos in high definition, a costefficient distribution is desirable. In this paper we present a low-cost consumer electronics set-top box for streaming live video content using cost-efficient P2P networks. The main features of the set-top box include content discovery, highquality playback, easy user management, and social interaction.
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[188] | Markus Waltl, The Next Dimension of Video Experience: Sensory Effects, In Proceedings of the 12th IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks (WoWMoM) (Mario Gerla, Enzo Mingozzi, Mainak Chatterjee, Andrea Passarella, eds.), IEEE, Los Alamitos, CA, USA, pp. 3, 2011.
[bib] [doi] [pdf] [abstract]
Abstract: This work presents a new dimension for Quality of Experience (QoE), i.e., sensory information. Sensory information enhances the user experience by providing additional so-called sensory effects (e.g., wind, light, vibration) which are rendered together with multimedia content. Furthermore, the work describes two subjective quality assessments conducted in this area including their results.
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[187] | Markus Waltl, Christian Timmerer, Benjamin Rainer, Hermann Hellwagner, Sensory Effects for Ambient Experiences in the World Wide Web, Alpen-Adria Universität Klagenfurt, no. TR/ITEC/11/1.13, Klagenfurt, Austria, pp. 12, 2011.
[bib] [pdf] [abstract]
Abstract: More and more content in various formats become available via the World Wide Web (WWW). Currently available Web browsers are able to access and interpret these contents (i.e., Web videos, text, image, and audio). These contents stimulate only senses like audition or vision. Recently, it has been proposed to stimulate also other senses while consuming multimedia content through so-called sensory effects. These sensory effects aim to enhance the ambient experience by providing effects, such as, light, wind, vibration, etc. The effects are represented as Sensory Effect Metadata (SEM) which is associated to multimedia content and is rendered on devices like fans, vibration chairs, or lamps. In this paper we present a plug-in for the Mozilla Firefox browser which is able to render such sensory effects that are provided via the WWW. Furthermore, the paper describes two user studies conducted with the plug-in and presents the results achieved.
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[186] | Markus Waltl, Benjamin Rainer, Christian Timmerer, Hermann Hellwagner, Sensory Experience for Videos on the Web, In Proceedings of the Workshop on Multimedia on the Web (MMWeb) 2011 (Laszlo Böszörmenyi, Oge Marques, Mathias Lux, Ralf Klamma, eds.), IEEE, Los Alamitos, CA, USA, pp. 1-3, 2011.
[bib] [pdf] [abstract]
Abstract: More and more multimedia content is becoming available via the World Wide Web (WWW). These contents stimulate only senses like hearing or vision. Recently, it has been proposed to stimulate also other senses while consuming multimedia content, through so-called sensory effects. These sensory effects aim at enhancing the user’s viewing experience by providing effects such as light, wind, vibration, etc. These effects are represented as Sensory Effect Metadata (SEM) which is associated to multimedia content and is rendered on devices like fans, lamps, or vibration chairs. In this paper, we present a plug-in for Web browsers which is able to render such sensory effects provided via Web content, and we describe a demonstrator that uses this plug-in to control an amBX system.
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[185] | Daniel Gatica-Perez, Thomas Gottron, Martin Hahn, Jim Hurley, Yiannis Kompatsiaris, Marta Larson, Barnabas Takacs, Christian Timmerer, David Wortley, Vision 2020 on Networked Media and Web Applications, Technical report, European Commission, Brussels, Belgium, pp. 110, 2011. (Internal communication of the European Commission. Brussels 2011, Available at the Author.)
[bib] |
[184] | Tibor Szkaliczki, Michael Eberhard, Hermann Hellwagner, Laszlo Szobonya, Knapsack Problem and Piece Picking Algorithms for Layered Video Streaming, In 7th Japanese-Hungarian Symposium on Discrete Mathematics and its Applications (Takuro Fukunaga, Satoru Iwata, Hiroshi Nagamochi, Kenjiro Takazawa, eds.), published on workshop homepage, Kyoto, Japan, pp. 419-426, 2011.
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[183] | Mark Stuart, Mike Buckham, Richard Marsh, Michael Eberhard, Johnathan Ishmael, Chris Needham, Christian Timmerer, NextShareTV: A Set-Top Box for Bittorrent-based Live Streaming, In Proceedings of the 2011 IEEE International Conference on Multimedia and Expo (ICME 2011) (Irene Cheng, Gabriel Fernandez, Haohong Wang, eds.), IEEE, Los Alamitos, CA, USA, pp. 1, 2011.
[bib] [pdf] [abstract]
Abstract: The distribution of audio-visual content over the Internet has become very popular in recent years. However, due to the bandwidth requirements of videos in high definition, a costefficient distribution is desirable. In this paper we present a low-cost consumer electronics set-top box for streaming live video content using cost-efficient P2P networks. The main features of the set-top box include content discovery, highquality playback, easy user management, and social interaction.
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[182] | Markus Quaritsch, Robert Kuschnig, Hermann Hellwagner, Bernhard Rinner, Fast Aerial Image Acquisition and Mosaicking for Emergency Response Operations by Collaborative UAVs, In Proceedings of the 8th International Conference on Information Systems for Crisis Response and Management (ISCRAM 2011) (Julie Dugdale, David Mendonça, eds.), Springer, Berlin, Heidelberg, New York, pp. 5, 2011.
[bib] [pdf] |