Kurylyak, A. O., O. B. Skaskiv, and L. O. Shapovalovs’ka. 2016. “Wiman-Type Inequality for Functions Analytic in a Polydisc”. Ukrains’kyi Matematychnyi Zhurnal 68 (1), 78-86. https://umj.imath.kiev.ua/index.php/umj/article/view/1823.