HÜGEL, Lidia Angeleri; SAORÍN, Manuel. Modules with perfect decompositions. Mathematica Scandinavica, Berkeley, CA, United States, v. 98, n. 1, p. 19–43, 2006. DOI: 10.7146/math.scand.a-14981. Disponível em: https://journals.msp.org/mscand/article/view/716. Acesso em: 24 jul. 2026.