1.
Vakarchuk MB, Vakarchuk SB. On total moduli of continuity for $2\pi$-periodic functions of two variables in the space $L_{2,2}$. Ukr. Mat. Zhurn. [Internet]. 2017 Mar. 25 [cited 2025 Dec. 6];69(3):300-1. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/1697