Mutual Contextualization in Tripartite Graphs of Folksonomies. In Karl Aberer, Key-Sun Choi, Natasha Noy, Dean Allemang, Kyung-Il Lee, Lyndon Nixon, Jennifer Golbeck, Peter Mika, Diana Maynard, Riichiro Mizoguchi, Guus Schreiber, und Philippe Cudré-Mauroux (Hrsg.), The Semantic Web, (4825):966-970, Springer, Berlin / Heidelberg, 2007. [PUMA: context folksonomies ol_web2.0 tagging] URL