Serdyuk AS, Stepanyuk TA. Order Estimates for the Best Approximations and Approximations by Fourier Sums in the Classes of Convolutions of Periodic Functions of Low Smoothness in the Uniform Metric. Ukr. Mat. Zhurn. [Internet]. 2014Dec.25 [cited 2024Dec.4];66(12):1658–1675. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/2253