@article{RO_1999__33_1_29_0,
     author = {Chiu, Huan Neng},
     title = {A good approximation of the inventory level in a $(Q, r)$ perishable inventory system},
     journal = {RAIRO - Operations Research - Recherche Op\'erationnelle},
     pages = {29--45},
     publisher = {EDP-Sciences},
     volume = {33},
     number = {1},
     year = {1999},
     mrnumber = {1717013},
     zbl = {0958.90001},
     language = {en},
     url = {http://www.numdam.org/item/RO_1999__33_1_29_0/}
}