Fedunyk-Yaremchuk, O., Hembars’kyi, M., & Hembars’ka, S. (2020). Approximative characteristics of the Nikol’skii-Besov-type classes of periodic functions in the space $B_{\infty,1}$. Carpathian Mathematical Publications, 12(2), 376–391. https://doi.org/10.15330/cmp.12.2.376-391