Tahani Jabbar Khraibet, Wisam Kamil Ghafil, Kadhim Bahlool Tarish 2020. Using GA / PSO To Solve n/(F_2∕)⁄((∑_(j=1)^n▒E_j )+U_j)Problem In Machine Scheduling . International Journal of Advanced Science and Technology. 29, 08 (May 2020), 4406 - 4411.