Yanchenko, S.Ya. “Approximation of the Nikol’skii-Besov Functional Classes by Entire Functions of a Special Form: Array”. Carpathian Mathematical Publications 12, no. 1 (June 12, 2020): 148–156. Accessed March 29, 2024. https://scijournals.pnu.edu.ua/index.php/cmp/article/view/3895.