HÜGEL, Lidia Angeleri; SAORÍN, Manuel. Modules with perfect decompositions. MATHEMATICA SCANDINAVICA, [S. l.], v. 98, n. 1, p. 19–43, 2006. DOI: 10.7146/math.scand.a-14981. Disponível em: https://www.mscand.dk/article/view/14981. Acesso em: 6 dec. 2025.