MADSEN, I.; ROTHENBERG, M. On the classification of G-spheres II: PL automorphism groups. MATHEMATICA SCANDINAVICA, [S. l.], v. 64, p. 161–218, 1989. DOI: 10.7146/math.scand.a-12253. Disponível em: https://www.mscand.dk/article/view/12253. Acesso em: 29 apr. 2024.