Replenishment of imperfect items in an EOQ inventory model with partial backordering Ata Allah Taleizadeh, Mahboobeh Perak Sari Khanbaglo and Leopoldo Eduardo Cárdenas-Barrón RAIRO-Oper. Res., 54 2 (2020) 413-434 Published online: 27 February 2020 DOI: 10.1051/ro/2018099