Bin Yu Mahadevan Venkatraman Munindar P. Singh An Adaptive Social Network for Information Access: Theoretical and Experimental Results. 21-38 2003 17 Applied Artificial Intelligence 1 http://taylorandfrancis.metapress.com/openurl.asp?genre=article&issn=0883-9514&volume=17&issue=1&spage=21 db/journals/aai/aai17.html#YuVS03