K. Kotis, G. Vouros, and J. Alonso. Semantic Web and Databases. Second International Workshop - SWDB 2004, volume 3372 of LNCS, page 155-166. Berlin Heidelberg, Germany, Springer-Verlag, (29-30 08 2004)
M. Hepp, D. Bachlechner, and K. Siorpaes. WikiSym '06: Proceedings of the 2006 international symposium on Wikis, page 143--144. New York, NY, USA, ACM Press, (2006)
H. Allert, H. Markannen, and C. Richter. Proceedings of the 2nd International Workshop on Learner-Oriented Knowledge Management and KM-Oriented Learning (LOKMOL 06), in conjunction with the First European Conference on Technology-Enhanced Learning (ECTEL 06), page 115-125. (Oct 2, 2006)
S. Davis, and C. Gutwin. GI '05: Proceedings of the 2005 conference on Graphics interface, page 145--152. School of Computer Science, University of Waterloo, Waterloo, Ontario, Canada, Canadian Human-Computer Communications Society, (2005)