6Wee HM.Deterioratinginventorymodelwithquantitydiscount,pricingandpartialbackordering[J].International Journalof Production Economics,1999,59(1-3):511-518.
10Wee H.M. Deteriorating inventory model with quantity discount, pricing and partial backordering [J]. Interna tional Journal of Production Economics, 1999, 59(1- 3) : 511-518.