N. Noy, S. Kunnatur, M. Klein, und M. Musen. Third International Semantic Web Conference, Seite 259+. Hiroshima, Japan, Springer Berlin, (November 2004)
E. Santos-Neto, M. Ripeanu, und A. Iamnitchi. (2007)masses may not only support folksonomies but may also hinder their
usage for individuals, efficiency of tagging systems decreases with
growing population,.