LAL, Harbans. A Remark on Rings with Primary Ideals as Maximal Ideals. Mathematica Scandinavica, Berkeley, CA, United States, v. 29, p. 72–72, 1971. DOI: 10.7146/math.scand.a-11035. Disponível em: https://journals.msp.org/mscand/article/view/2320. Acesso em: 25 jul. 2026.