GERGÜN, S.; OSTROVSKII, I. On the Poisson representation of a function harmonic in the upper half-plane. Математическая физика, анализ, геометрия, Харків, Україна, v. 9, n. 2, p. 243–248, 2002. Disponível em: https://mag.ilt.kharkiv.ua/index.php/mag/article/view/m09-0243e. Acesso em: 21 лис. 2024.