GAULD, D. B.; MARTIN, G. J. Essential singularities of quasimeromorphic mappings. MATHEMATICA SCANDINAVICA, [S. l.], v. 73, p. 36–40, 1993. DOI: 10.7146/math.scand.a-12454. Disponível em: https://www.mscand.dk/article/view/12454. Acesso em: 22 nov. 2024.