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