Vynnyts’kyi, B. V., and V.L. Sharan. 1998. “Description of Sequences of Zeros of One Class of Functions Analytic in a Half-Plane”. Ukrains’kyi Matematychnyi Zhurnal 50 (9): 1169–1176. https://umj.imath.kiev.ua/index.php/umj/article/view/4833.