Nsereko , K. K. ., and S. N. . Nanzekho . “Optimization of Supply Chains and Service Delivery in Selected Ugandan Charitable Organizations”. Journal of Procurement and Supply Chain Management, vol. 1, no. 1, Sept. 2022, pp. 1-16, https://gprjournals.org/journals/index.php/jpscm/article/view/26.