OFSTI, Audun. On the Structure of a Certain Class of Locally Compact Rings. Mathematica Scandinavica, Berkeley, CA, United States, v. 18, p. 134–142, 1966. DOI: 10.7146/math.scand.a-10787. Disponível em: https://journals.msp.org/mscand/article/view/2515. Acesso em: 25 jul. 2026.