Craven, M.; DiPasquo, D.; Freitag, D.; McCallum, A.; Mitchell, T.; Nigam, K. & Slattery, S.: Learning to Construct Knowledge Bases from the World Wide Web. In: Artificial Intelligence 118 (2000), Nr. 1-2, S. 69-113
[Volltext]  [BibTeX] 

Joachims, T.; Freitag, D. & Mitchell, T.: Webwatcher: A tour guide for the World Wide Web. Proceedings of the International Joint Conference on Artificial Intelligence (IJCAI). San Francisco, CA: Morgan Kaufmann, 1997, S. 770-777
[BibTeX]