F. Abel, N. Henze, and D. Krause. Proceedings of the 17th ACM Conference on Information and Knowledge Management, CIKM 2008, Napa Valley, California, USA, October 26-30, 2008, page 1429-1430. ACM, (2008)
D. Benz, B. Krause, G. Kumar, A. Hotho, and G. Stumme. Proceedings of the 1st Workshop on Explorative Analytics of Information Networks (EIN2009), Bled, Slovenia, (September 2009)
M. Carman, M. Baillie, and F. Crestani. SSM '08: Proceeding of the 2008 ACM workshop on Search in social media, page 27--34. New York, NY, USA, ACM, (2008)
M. Carman, M. Baillie, R. Gwadera, and F. Crestani. SIGIR '09: Proceedings of the 32nd international ACM SIGIR conference on Research and development in information retrieval, page 123--130. New York, NY, USA, ACM, (2009)