VALQUI HAASE, Christian Holger. Pro-módulos. Pro Mathematica, [S. l.], v. 16, n. 31-32, p. 5–24, 2002. Disponível em: https://revistas.pucp.edu.pe/index.php/promathematica/article/view/8175. Acesso em: 28 dic. 2025.