Raphael, A. O. ., J. . George, and B. S. . Yakura. “Application of Two-Stage Stochastic Programming for Multi-Product Inventory Optimization in a Nigerian Pharmaceutical Firm”. International Journal of Science for Global Sustainability, vol. 11, no. 3, Oct. 2025, pp. 9-14, doi:10.57233/ijsgs.v11i3.914.