POGUNTKE, Detlev. Unitary representations of diamond groups. Mathematica Scandinavica, Berkeley, CA, United States, v. 85, n. 1, p. 121–160, 1999. DOI: 10.7146/math.scand.a-13889. Disponível em: https://journals.msp.org/mscand/article/view/939. Acesso em: 24 jul. 2026.