Zahra Hoseinpour, Mohammad Taghipour, Jafar Hassan Beigi, Maryam Mahboobi (2021) “The Problem Solving of Bi-objective Hybrid Production with the Possibility of Production Outsourcing through Imperialist Algorithm, NSGA-II, GAPSO Hybrid Algorithms”, Turkish Journal of Computer and Mathematics Education (TURCOMAT), 12(13), pp. 8090 –. doi: 10.17762/turcomat.v12i13.11182.