B. Krishnamurthy, P. Gill, and M. Arlitt. WOSP '08: Proceedings of the first workshop on Online social networks, page 19--24. New York, NY, USA, ACM, (2008)
C. Costa, G. Beham, W. Reinhardt, and M. Sillaots. Proceedings of the 2nd SIRTEL'08 Workshop on Social Information Retrieval for Technology Enhanced Learning, 382, Maastricht, The Netherlands, (September 2008)
L. Gerlach, S. Hauptman, and M. Böhringer. Tagungsband der Multikonferenz Wirtschaftsinformatik (MKWI), page 1485--1494. Göttingen, Universitätsverlag Göttingen, (February 2010)
M. Böhringer, and S. Barnes. Proceedings of the 17th European Conference on Information Systems (ECIS), Verona, Italy, June 08-10, 2009, page in press. (2009)
B. Krishnamurthy, P. Gill, and M. Arlitt. WOSP '08: Proceedings of the first workshop on Online social networks, page 19-24. New York, NY, USA, ACM, (2008)