JONDRUP, S. On Finitely Generated Flat Modules III. MATHEMATICA SCANDINAVICA, [S. l.], v. 29, p. 206–210, 1971. DOI: 10.7146/math.scand.a-11046. Disponível em: https://www.mscand.dk/article/view/11046. Acesso em: 28 apr. 2024.