Laith, W., S. Al-Zubaidy, and M. Mahmoud. ‚ÄúDetermination Optimum Inventory Level for Material Using Genetic Algorithm‚ÄĚ. Journal of Engineering, Vol. 24, no. 1, Jan. 2018, pp. 218-30, http://joe.uobaghdad.edu.iq/index.php/main/article/view/509.