BRAICHEV, G. G. Calculation of the indicator of an entire function of rational order in terms of its taylor coefficients. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 45, n. 6, p. 854–858, 1993. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5873. Acesso em: 5 dec. 2025.