Zabolotskyj, M.V., and M.R. Mostova. “Asymptotic Behavior of the Logarithmic Derivative for Entire Functions of Order Zero”. Carpathian Mathematical Publications 6, no. 2 (December 26, 2014): 237–241. Accessed May 8, 2024. https://scijournals.pnu.edu.ua/index.php/cmp/article/view/1355.