P. Siehndel, R. Kawase, B. Nunes, and E. Herder. WEBIST 2014 - Proceedings of the 10th International Conference on Web Information Systems and Technologies, Volume 2, Barcelona, Spain, 3-5 April, 2014, page 270--277. (2014)
R. Kawase, P. Siehndel, and U. Gadiraju. Open Learning and Teaching in Educational Communities - 9th European Conference on Technology Enhanced Learning, EC-TEL 2014, Graz, Austria, September 16-19, 2014, Proceedings, page 193--206. (2014)