HEINS, M. On a Theorem of Study Concerning Conformal Maps with Convex Images II. MATHEMATICA SCANDINAVICA, [S. l.], v. 32, p. 245–257, 1973. DOI: 10.7146/math.scand.a-11459. Disponível em: https://www.mscand.dk/article/view/11459. Acesso em: 5 may. 2024.