M.B. Aryanezhad - Iran University of Science and Technology - Department of IE
S.M. Ghoreyshix - Iran University of Science and Technology - Department of IE
M. Karimi-Nasab - Iran University of Science and Technology - Department of IE
E. Noorollahi - Iran University of Science and TechnologyDepartment of IE

This paper presents a new mathematical formulation for production-inventory policies with multiple deteriorating items in multiple time periods. The deterioration rate of each product type is a random normal variable. The proposed model determines the production lot size of each product typesin each planning period.

Multi-Product: Deteriorating Items: Random deterioration; Lot Sizing