Fedunyk-Yaremchuk O, Hembars'ka S, Romanyuk I, Zaderei P. Approximation characteristics of the Nikol’skii-Besov-type classes of periodic functions of several variables in the space $B_{q,1}$. Carpathian Math. Publ. [Internet]. 2024 Jun. 6 [cited 2024 Nov. 21];16(1):158-73. Available from: https://vps.pnu.edu.ua/index.php/cmp/article/view/8055