Sultan, J.A., Jasim, O.R. and Salih, S.A. 2015. An improved Genetic Algorithm For Fuzzy Production PlanningProblems with Application. Journal of University of Human Development. 1, 3 (Aug. 2015), 390–396. DOI:https://doi.org/10.21928/juhd.v1n3y2015.pp390-396.