UBOE, Jan. Conformal martingales and analytic functions. Mathematica Scandinavica, Berkeley, CA, United States, v. 60, p. 292–309, 1987. DOI: 10.7146/math.scand.a-12186. Disponível em: https://journals.msp.org/mscand/article/view/1443. Acesso em: 25 jul. 2026.