Chung-Yuan Dye Liang-Yuh Ouyang An EOQ model for perishable items under stock-dependent selling rate and time-dependent partial backlogging. 776-783 2005 163 Eur. J. Oper. Res. 3 https://doi.org/10.1016/j.ejor.2003.09.027 db/journals/eor/eor163.html#DyeO05