Omar, M., and S. S. Supadi. “An Integrated Production System for a Single Installment Policy of Raw MaterialThis Paper Considers a Manufacturing System Which Procures Raw Materials from Suppliers and Processes Them to Make a Finished Product. The Problem Is to Determine an Optimal Pr”. Malaysian Journal of Science, vol. 27, no. 1, Apr. 2008, pp. 143-51, https://samudera.um.edu.my/index.php/MJS/article/view/7943.