Fedorenko AS, Fedorenko O. The Best $m$-Term Trigonometric Approximations of the Classes $L_{\beta ,p}^\Psi$ in Uniform Metric. Ukr. Mat. Zhurn. [Internet]. 2004 Jan. 25 [cited 2025 Apr. 9];56(1):129-32. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/3735