Ontology-Focused Crawling of Documents and Relational Metadata
A. Maedche, M. Ehrig, L. Stojanovic, S. Handschuh, and R. Volz. The eleventh International World Wide Web Conference WWW2002, poster track, Hawaii, 2002, (May 2002)\\ http://www2002.org/CDROM/poster/94/index.html.