Khasanah, Nur, Nikken Prima Puspita, Fitriana Hasnani, Meryta Febrilian Fatimah, and Zakaria Bani Ikhtiyar. “LEONTIEF MATRIX: BUSINESS MODEL RECOMMENDATION FOR EXPORT COMMODITY OF NORTH SUMATERA”. Jurnal Matematika UNAND 15, no. 1 (January 26, 2026): 95–107. Accessed November 5, 2026. https://jmua.fmipa.unand.ac.id/index.php/jmua/article/view/1257.