E. Melis, A. Faulhaber, A. Doost, and C. Ullrich. Advances in Web-Based Learning ICWL 2010, volume 6483 of Lecture Notes in Computer Science, page 210--219. Berlin, Heidelberg, Springer Berlin / Heidelberg, (2010)
N. Li, C. Ullrich, S. Helou, and D. Gillet. Advances in Web-Based Learning ICWL 2010, volume 6483 of Lecture Notes in Computer Science, page 161--170. Berlin, Heidelberg, Springer Berlin / Heidelberg, (2010)
D. Jednoralski, E. Melis, S. Sosnovsky, and C. Ullrich. Advances in Web-Based Learning ICWL 2010, volume 6483 of Lecture Notes in Computer Science, page 111--120. Berlin, Heidelberg, Springer Berlin / Heidelberg, (2010)