GHOSH, Shyamali; ROY, Sankar Kumar. Fuzzy bi-level linear programming problem using TOPSIS approach. Fuzzy Optimization and Modeling Journal (FOMJ), [S. l.], v. 1, n. 1, p. 1–10, 2020. Disponível em: https://oiccpress.com/fomj/article/view/6425. Acesso em: 13 jun. 2026.