An extension of partial backordering EOQ with correlated demand caused by cross-selling considering multiple minor items

► Multi-item EOQ with partial backordering and correlated demand caused by cross-selling. ► A global optimum algorithm for solving the multi-item EOQ model. ► We propose a multi-item EOQ with correlated demand caused by cross-selling. ► A global optimum algorithm for solving the multi-item EOQ model is developed.