Krutchaiyan, Jaonai, and Aua-aree Boonperm. “A Mixed-Integer Programming Model for Solving a Two-Level Location-Routing Problem in Biomass Supply Chains”. Research on Modern science and Utilizing Technological Innovation Journal (RMUTI Journal) 17, no. 2 (August 20, 2024): 17–30. accessed October 9, 2026. https://ph01.tci-thaijo.org/index.php/rmutijo/article/view/257001.