B. V. Vynnyts’kyi, “On the growth of functions represented by Dirichlet series with complex coefficients on the real axis”, Ukr. Mat. Zhurn., vol. 49, no. 12, pp. 1610–1616. December, Dec. 1997, Accessed: Dec. 05, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/5165