1.
Vakarchuk SB, Shvachko AV. On the Best Approximation in the Mean by Algebraic Polynomials with Weight and the Exact Values of Widths for the Classes of Functions. Ukr. Mat. Zhurn. [Internet]. 2013Dec.25 [cited 2024Nov.24];65(12):1604–1621. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/2540