Andrei Scherbina Sergey Kuznetsov Clustering of Web Sessions Using Levenstein Metric. 127-133 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3275&spage=127 2004 conf/icdm2/2004 Industrial Conference on Data Mining db/conf/icdm2/icdm2004.html#ScherbinaK04