Kondratyuk, Ya. V., and A. A. Kondratyuk. “On Boundedness of Square Means for the Logarithms of Blaschke Products”. Ukrains’kyi Matematychnyi Zhurnal 51, no. 2 (February 25, 1999): 255–259. Accessed May 12, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/4605.