Mussafi, Noor Saif Muhammad, and Alya Adianta. “Optimization of Transportation Distribution Costs Using Improved Vogel’s Approximation Method (IVAM) (Case Study: PT. Sinar Putra Pertam)”. IJIEM - Indonesian Journal of Industrial Engineering and Management 5, no. 2 (November 20, 2024): 417–428. Accessed May 29, 2026. https://training-ojs3-publikasi.mercubuana.ac.id/index.php/ijiem/article/view/27288.