CONDER, M. D. E.; MACLACHLAN, C.; MARTIN, G. J.; O'BRIEN, E. A. 2-Generator arithmetic Kleinian groups III. Mathematica Scandinavica, Berkeley, CA, United States, v. 90, n. 2, p. 161–179, 2002. DOI: 10.7146/math.scand.a-14368. Disponível em: https://journals.msp.org/mscand/article/view/851. Acesso em: 24 jul. 2026.