GUSTAFSON, William H. Group Rings of Finite Representation Type. Mathematica Scandinavica, Berkeley, CA, United States, v. 34, p. 58–60, 1974. DOI: 10.7146/math.scand.a-11505. Disponível em: https://journals.msp.org/mscand/article/view/2138. Acesso em: 25 jul. 2026.