1.
Babich YP, Mikhailova TF. Fine-grained evaluations of the best estimates for smooth functions in $C_{2\pi}$ in terms of linear combinations of modules of continuity of their derivatives. Ukr. Mat. Zhurn. [Internet]. 2022May23 [cited 2022Jun.30];74(4):569 -572. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/7124