CASSING, James H.; WELSS, Jerome C.; ZAMALLOA, Edgar L. Cycles in natural resources and changes in welfare: analysis of six developing countries. Apuntes. Social Sciences Journal, [S. l.], n. 22, p. 3–20, 1988. DOI: 10.21678/apuntes.22.264. Disponível em: https://revistas.up.edu.pe/apuntes/article/view/264. Acesso em: 22 sep. 2026.