HEIN, James. The structure of an almost artinian module. Mathematica Scandinavica, Berkeley, CA, United States, v. 50, p. 206–208, 1982. DOI: 10.7146/math.scand.a-11954. Disponível em: https://journals.msp.org/mscand/article/view/1692. Acesso em: 25 jul. 2026.