T. Falkowski, A. Barth, und M. Spiliopoulou. In Proc. of the 2007 IEEE / WIC / ACM International Conference on Web Intelligence,, Seite 112-115. (2007)
N. Schlitter, und T. Falkowski. Proceedings of the International Conference on Advances in Social Network Analysis and Mining, (2009)to be published at The 2009 International Conference on Advances in Social Networks Analysis and Mining (ASONAM).