ZabolotskiiN. V., and MostovaM. R. “Logarithmic Derivative and the Angular Density of Zeros for a Zero-Order Entire Function”. Ukrains’kyi Matematychnyi Zhurnal 66, no. 4 (April 25, 2014): 473–481. Accessed November 22, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/2149.