LOHWATER, A. J.; PIRANIAN, G.; RUDIN, W. The derivative of a Schlichtfunction. Mathematica Scandinavica, Berkeley, CA, United States, v. 3, p. 103–106, 1955. DOI: 10.7146/math.scand.a-10430. Disponível em: https://journals.msp.org/mscand/article/view/2890. Acesso em: 8 sep. 2026.