1.
Babenko VF, Konareva SV. Jackson – Stechkin-type inequalities for the approximation of elements of Hilbert spaces. Ukr. Mat. Zhurn. [Internet]. 2018Sep.25 [cited 2024Jun.25];70(9):1155-6. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/1626