UBOE, J. Conformal martingales and analytic functions. MATHEMATICA SCANDINAVICA, [S. l.], v. 60, p. 292–309, 1987. DOI: 10.7146/math.scand.a-12186. Disponível em: https://www.mscand.dk/article/view/12186. Acesso em: 2 may. 2024.