Romanyuk , A. S.; Yanchenko, S. Y. Kolmogorov Widths of the Nikol’skii – Besov Classes of Periodic Functions of Many Variables in the Space of Quasi-Continuous Functions. Ukr. Mat. Zhurn. 2022, 74 (2), 220-232. https://doi.org/10.37863/umzh.v74i2.6932.