R. Gumienny, L. Gericke, M. Wenzel, and C. Meinel. Proceedings of the 2013 conference on Computer supported cooperative work, page 995--1007. New York, NY, USA, ACM, (2013)
K. Wolf, S. Linckels, and C. Meinel. SIGUCCS '07: Proceedings of the 35th annual ACM SIGUCCS fall conference, page 366--371. New York, NY, USA, ACM, (2007)
S. Repp, S. Linckels, and C. Meinel. Proceedings of the international workshop on Educational multimedia and multimedia education, page 19--26. New York, NY, USA, ACM, (2007)