SEPPÄLÄ, M.; SORVALI, T. Leftings of Möbius groups to matrix groups. MATHEMATICA SCANDINAVICA, [S. l.], v. 72, p. 223–234, 1993. DOI: 10.7146/math.scand.a-12446. Disponível em: https://www.mscand.dk/article/view/12446. Acesso em: 23 nov. 2024.