F. Abel, N. Henze, R. Kawase, and D. Krause. The Semantic Web: Research and Applications, volume 6089 of Lecture Notes in Computer Science, Springer Berlin Heidelberg, (2010)
R. Baltazar, A. Cervantes, and V. Zamudio. Intelligent Environments (Workshops), volume 10 of Ambient Intelligence and Smart Environments, page 74-84. IOS Press, (2011)
I. Marenzi, S. Zerr, F. Abel, and W. Nejdl. International Journal of Continuing Engineering Education and Life-Long Learning (IJCEELL), 19 (4/5/6):
276-290(2009)
F. Abel, E. Herder, I. Marenzi, W. Nejdl, and S. Zerr. 2nd Annual Workshop on Search in Social Media (SSM '09), co-located with ACM SIGIR 2009 Conference on Information Retrieval, Boston, USA, (July 2009)
F. Abel, I. Marenzi, W. Nejdl, and S. Zerr. Workshop on Social Information Retrieval for Technology-Enhanced Learning (SIRTEL'09) at the International Conference on Web-based Learning (ICWL '09), Aachen, Germany, Vol-535, CEUR-WS.org, (August 2009)
F. Abel, I. Marenzi, W. Nejdl, and S. Zerr. Learning in the Synergy of Multiple Disciplines, Proceedings of the EC-TEL 2009, volume 5794 of Lecture Notes in Computer Science, Berlin/Heidelberg, Springer, (October 2009)
A. Caine. http://www.unesco.org/new/en/communication-and-information/access-to-knowledge/open-educational-resources/why-should-i-care-about-oers/, (2014)
F. Abel, N. Henze, R. Kawase, D. Krause, and P. Siehndel. Web Information Systems and Technologies, Lecture Notes in Business Information Processing, 2011, Volume 75, Part II, 114-128, (2011)
F. Abel, R. Kawase, D. Krause, P. Siehndel, and N. Ullmann. Proc. of 6th International Conference on Web Information Systems and Technologies (WEBIST 2010), April 2010, Valencia, Spain., (2010)
F. Abel, I. Celik, G. Houben, and P. Siehndel. International Semantic Web Conference (1), volume 7031 of Lecture Notes in Computer Science, page 1-17. Springer, (2011)
F. Abel, M. Frank, N. Henze, D. Krause, and P. Siehndel. 2nd International Conference on Weblogs and Social Media (ICWSM 2008), Seattle, USA., page 230--231. Menlo Park, California, The AAAI Press, (April 2008)
P. Siehndel, F. Abel, E. Diaz-Aviles, N. Henze, and D. Krause. The Influence of Technology on Social Network Analysis and Mining, volume 6 of Lecture Notes in Social Networks, Springer Vienna, (2013)
F. Abel, C. Hauff, G. Houben, R. Stronkman, and K. Tao. Proceedings of the 21st International Conference Companion on World Wide Web, page 305--308. New York, NY, USA, ACM, (2012)
R. Torres, S. McNee, M. Abel, J. Konstan, and J. Riedl. Proceedings of the 4th ACM/IEEE-CS Joint Conference on Digital Libraries, page 228--236. New York, NY, USA, ACM, (2004)
K. Tao, F. Abel, C. Hauff, G. Houben, and U. Gadiraju. Proceedings of the 22nd international conference on World Wide Web, page 1273--1284. International World Wide Web Conferences Steering Committee, (2013)
P. Siehndel, F. Abel, E. Diaz-Aviles, N. Henze, and D. Krause. The Influence of Technology on Social Network Analysis and Mining, volume 6 of Lecture Notes in Social Networks, Springer Vienna, (2013)
F. Abel, N. Henze, E. Herder, and D. Krause. User Modeling, Adaptation, and Personalization, volume 6075 of Lecture Notes in Computer Science, Springer Berlin Heidelberg, (2010)