Filevych, P. V., and O. B. Hrybel. “On Regular Variation of Entire Dirichlet Series”. Matematychni Studii 58, no. 2 (January 16, 2023): 174-181. Accessed December 22, 2024. http://matstud.org.ua/ojs/index.php/matstud/article/view/379.