Hansheng Lei Venu Govindaraju Matching and retrieving sequential patterns using regression. 261-270 2005 3 Web Intelligence and Agent Systems 4 http://iospress.metapress.com/openurl.asp?genre=article&issn=1570-1263&volume=3&issue=4&spage=261 db/journals/wias/wias3.html#LeiG05