%0 Journal Article %A Liang-Yuh Ouyang %A Bor-Ren Chuang %T Stochastic Inventory Models Involving Variable Lead Time With a Service Level Constraint %J Yugoslav journal of operations research %D 2000 %P 81 %V 10 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/YJOR_2000_10_1_a7/ %G en %F YJOR_2000_10_1_a7