KANIUTH, E. Topological Frobenius properties for nilpotent groups. II. MATHEMATICA SCANDINAVICA, [S. l.], v. 68, p. 89–107, 1991. DOI: 10.7146/math.scand.a-12348. Disponível em: https://www.mscand.dk/article/view/12348. Acesso em: 4 may. 2024.