JONDRUP, S. On Finitely Generated Flat Modules II. MATHEMATICA SCANDINAVICA, [S. l.], v. 27, p. 105–112, 1970. DOI: 10.7146/math.scand.a-10990. Disponível em: https://www.mscand.dk/article/view/10990. Acesso em: 1 may. 2024.