JACOBSEN, J.; STETKAER, H. Eigenspace representations of nilpotent lie groups. MATHEMATICA SCANDINAVICA, [S. l.], v. 48, p. 41–55, 1981. DOI: 10.7146/math.scand.a-11897. Disponível em: https://www.mscand.dk/article/view/11897. Acesso em: 27 apr. 2024.