LATIF, B. Simultaneous Substitution and Utility Maximization: An MRS Analysis with a Fixed Budget. European Journal of Economics, [S. l.], v. 5, n. 2, p. 118–128, 2025. DOI: 10.33422/eje.v5i2.1186. Disponível em: https://diamondopen.com/journals/index.php/eje/article/view/1186. Acesso em: 25 jan. 2026.