G. Flake, S. Lawrence, und C. Giles. Proceedings of the sixth ACM SIGKDD international conference on Knowledge discovery and data mining - KDD \textquotesingle00, ACM Press, (2000)
J. Huang, Z. Zhuang, J. Li, und C. Giles. Proceedings of the 2008 International Conference on Web Search and Data Mining, Seite 107--116. New York, NY, USA, ACM, (2008)
G. Flake, S. Lawrence, und L. Giles. KDD '00: Proceedings of the sixth ACM SIGKDD international conference on Knowledge discovery and data mining, Seite 150--160. New York, NY, USA, ACM Press, (2000)