Thierry Van de Merckt Jean-Francois Chevalier PaKDD-2007: A Near-Linear Model for the Cross-Selling Problem. 46-54 2008 4 IJDWM 2 http://www.igi-pub.com/articles/details.asp?ID=7926 db/journals/jdwm/ijdwm4.html#MercktC08