Quadratic differentials in problems on product of inner radii of nonoverlapping domains. Neliniini Kolyvannya, [S. l.], v. 10, n. 4, p. 435–442, 2007. Disponível em: https://twinhead.imath.kiev.ua/index.php/nosc/article/view/449. Acesso em: 8 dec. 2025.