... (j=1,2,…,Q) customer is equal to 1/Q. Therefore we can now express the expected total cost for a unit demand as: Supply Chain Management – Pathways for Research and Practice 130 2/11)2/(12212/11)2/(2121)),(),(.(1)),(),(.(1QiQQiQiQQiiRmQsciRmQscPQiRmQsciRmQscPQk ... sales and approximately Poisson demand. International Journal of Production Economics, Vol. 102, pp. 244-254. Supply Chain Management – Pathways for Research and Practice 138 sharing information ... customers. Recently, many researchers (for example, Weng, 199 7, Lee and Whang, 199 9, Cachon and Lariviere, 2005, Gerchak and Wang, 2004, Davis and Spekman, 2004, Yao and Chiou, 2004, Chang et al.,...