OLSSON, Jorn B. On monomial $p^a$-representations of finite $p$-groups. MATHEMATICA SCANDINAVICA, [S. l.], v. 41, p. 218–224, 1977. DOI: 10.7146/math.scand.a-11715. Disponível em: https://www.mscand.dk/article/view/11715. Acesso em: 5 dec. 2025.