Edgar Hotz Udo Grimmer W. Heuser Gholamreza Nakhaeizadeh M. Wieczorek REVI-MINER, a KDD-environment for deviation detection and analysis of warranty and goodwill cost statements in automotive industry. 432-437 2001 KDD http://portal.acm.org/citation.cfm?id=502512.502577 db/conf/kdd/kdd2001.html#HotzGHNW01