Abstracts [de Foro Internacional : v.49, no.3 (197), 2009]. Foro Internacional, México, Ciudad de México, v. 49, n. 3, p. 712–715, 2009. Disponível em: https://forointernacional.colmex.mx/index.php/fi/article/view/1976. Acesso em: 4 jun. 2025.