S. Nešić, D. Gašević, and M. Jazayeri. 7th IEEE International Conference on Advanced Learning Technologies, Niiagata, Japan, IEEE Computer Society, (2007)To appear.
E. Ong, O. Grebner, and U. Riss. 4th Conference on Professional Knowledge Management - Experiences and Visions -, March 28. - 30. 2007, Potsdam, Germany, GITO Verlag Berlin, (March 2007)
V. Zacharias, and S. Braun. Workshop on Social and Collaborative Construction of Structured Knowledge (CKC), 16th International World Wide Web Conference (WWW 2007), (8-12 May 2007)