Bettina Berendt Bamshad Mobasher Miki Nakagawa Myra Spiliopoulou The Impact of Site Structure and User Environment on Session Reconstruction in Web Usage Analysis. 159-179 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2703&spage=159 2002 conf/kdd/2002web WEBKDD db/conf/kdd/webkdd2002.html#BerendtMNS02