D. Tarasowa, A. Khalili, S. Auer, and J. Unbehauen. 5th International Conference on Computer Supported Education (CSEDU 2013 ), page 33-42. (2013)13% acceptance rate, nominated for the best-paper award..
M. Martin, J. Unbehauen, and S. Auer. Proceedings of 7th Extended Semantic Web Conference (ESWC 2010), 30 May -- 3 June 2010, Heraklion, Crete, Greece, volume 6089 of Lecture Notes in Computer Science, page 304-318. Berlin / Heidelberg, Springer, (2010)