MADSEN, Ib; ROTHENBERG, Melvin. 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://tidsskrift.dk/math/article/view/12253. Acesso em: 14 aug. 2026.