ZabolotskiiN. V. “Asymptotics of the Logarithmic Derivative of an Entire Function of Zero Order”. Ukrains’kyi Matematychnyi Zhurnal 51, no. 1 (January 25, 1999): 32–40. Accessed November 24, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/4580.