JORGENSEN, V. On an inequality for the hyperbolic measure and its applications in the theory of functions. MATHEMATICA SCANDINAVICA, [S. l.], v. 4, p. 113–124, 1956. DOI: 10.7146/math.scand.a-10460. Disponível em: https://www.mscand.dk/article/view/10460. Acesso em: 4 may. 2024.