HEINS, Maurice. On a Theorem of Study Concerning Conformal Maps with Convex Images II. Mathematica Scandinavica, Berkeley, CA, United States, v. 32, p. 245–257, 1973. DOI: 10.7146/math.scand.a-11459. Disponível em: https://journals.msp.org/mscand/article/view/2151. Acesso em: 25 jul. 2026.