P. Mika. Proceedings of the International Semantic Web Conference (ISWC'05), volume 3729 of LNCS, page 522-536. Berlin Heidelberg, Germany, Springer-Verlag, (2005)
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)