ZABOLOTSKII, N. V.; MOSTOVA, M. R. Sufficient conditions for the existence of the $\upsilon$ -density for zeros of entire function of order zero. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 68, n. 4, p. 506–516, 2016. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/1856. Acesso em: 5 dec. 2025.