Jianhan Zhu Alexandre L. Gonçalves Victoria S. Uren Enrico Motta Roberto Carlos dos Santos Pacheco Marc Eisenstadt Dawei Song Relation discovery from web data for competency management. 405-417 2007 5 Web Intelligence and Agent Systems 4 http://iospress.metapress.com/openurl.asp?genre=article&issn=1570-1263&volume=5&issue=4&spage=405 db/journals/wias/wias5.html#ZhuGUMPES07