Krutchaiyan, J. and Boonperm, A.- aree (2024) “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(2), pp. 17–30. available at: https://ph01.tci-thaijo.org/index.php/rmutijo/article/view/257001 (accessed: 18 September 2026).