TY - JOUR AU - Chiu, Huan Neng TI - A good approximation of the inventory level in a $(Q, r)$ perishable inventory system JO - RAIRO - Operations Research - Recherche Opérationnelle PY - 1999 SP - 29 EP - 45 VL - 33 IS - 1 PB - EDP-Sciences UR - http://www.numdam.org/item/RO_1999__33_1_29_0/ LA - en ID - RO_1999__33_1_29_0 ER -