Two (s, S) Inventories with Perishable Units

Two inventories A and B with maximum capacity S and with perishable items are considered. Inter occurrence times of demands and the lead time for order are random variables. Whenever the inventory level falls to s from S, order is made for S - s units to fill up inventories A or B or both as the case may be. Inventory level probabilities are presented for exponential distribution. Numerical examples are also presented.