Hongbin QinPengfei FanHongtao TangPan HuangBo FangShunfa PanAn effective hybrid discrete grey wolf optimizer for the casting production scheduling problem with multi-objective and multi-constraint.458-4762019128Comput. Ind. Eng.https://doi.org/10.1016/j.cie.2018.12.061db/journals/candie/candie128.html#QinFTHFP19