Galan, V. D., and I. A. Shevchuk. 2017. “Exact Constant in the Dzyadyk Inequality for the Derivative of an Algebraic Polynomial”. Ukrains’kyi Matematychnyi Zhurnal 69 (5): 624-30. https://umj.imath.kiev.ua/index.php/umj/article/view/1721.