Ramyar, Mohammad, Mehdizadeh, Esmaeil, Hadji Molana, Seyyed Mohammad. “A New Bi-objective Mathematical Model to Optimize Reliability and Cost of Aggregate Production Planning System in a Paper and Wood Company.” Journal of Optimization in Industrial Engineering, vol. 13, no. 1, 2020, pp. 81-98. 10.22094/joie.2018.558585.1539