Kurylyak, A. O., O. B. Skaskiv, and L. O. Shapovalovs’ka. “Wiman-Type Inequality for Functions Analytic in a Polydisc”. Ukrains’kyi Matematychnyi Zhurnal 68, no. 1 (January 25, 2016): 78–86. Accessed December 5, 2025. https://umj.imath.kiev.ua/index.php/umj/article/view/1823.