Takashi Onoyama Takuya Maekawa Sen Kubota Norihisa Komoda GA Applied VRP Solving method for a Cooperative Logistics Network. 1101-1106 2006 conf/etfa/2006 ETFA http://dx.doi.org/10.1109/ETFA.2006.355445 db/conf/etfa/etfa2006.html#OnoyamaMKK06