1.
Vakarchuk S, Zabutna V, Vakarchuk M. Exact values of widths for the classes of functions defined by the averaged smoothness characteristics and majorants in the space $L_2$. Ukr. Mat. Zhurn. [Internet]. 2025 Sep. 30 [cited 2025 Dec. 5];77(10):599–628. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/9225