Yaqin, A.M. ’Ainul et al. 2025. Optimizing the Distribution and Allocation of COVID-19 Vaccines Using Mathematical Programming Approach: A Case Study in Indonesia. IJIEM - Indonesian Journal of Industrial Engineering and Management. 6, 1 (May 2025), 38–51. DOI:https://doi.org/10.22441/ijiem.v6i1.28013.