C. Arizzi, I. Marenzi, and M. Jaén. Proceedings of the International Workshop on Evidence-based Technology Enhanced Learning(EbTEL 12), volume 152 of Advances in Intelligent and Soft Computing, page 67-74. Springer-Verlag GmbH, (2012)
E. Holdack-Janssen, and I. Marenzi. Proceedings of the International Workshop on Evidence-based Technology Enhanced Learning(EbTEL 12), volume 152 of Advances in Intelligent and Soft Computing, page 57-65. Springer-Verlag GmbH, (2012)