JORGENSEN, Vilhelm. On an inequality for the hyperbolic measure and its applications in the theory of functions. Mathematica Scandinavica, Berkeley, CA, United States, v. 4, p. 113–124, 1956. DOI: 10.7146/math.scand.a-10460. Disponível em: https://journals.msp.org/mscand/article/view/2860. Acesso em: 25 jul. 2026.