Sedunova VV. Best one-sided approximation on the average for the classes of differentiable functions by algebraic polynomials. Ukr. Mat. Zhurn. [Internet]. 2017 Feb. 25 [cited 2025 Apr. 13];69(2):215-27. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/1687