MICKELSSON, Jouko. A description of discrete series using step algebras. Mathematica Scandinavica, Berkeley, CA, United States, v. 41, p. 63–78, 1977. DOI: 10.7146/math.scand.a-11702. Disponível em: https://journals.msp.org/mscand/article/view/1941. Acesso em: 25 jul. 2026.