Serdyuk АS, Stepanyuk Т. Estimates of the best m-term trigonometric approximations of classes of analytic functions . Dopov. Nac. akad. nauk Ukr. [Internet]. 2025 Jan. 8 [cited 2025 Jan. 10];(2):32-7. Available from: https://nasu-periodicals.org.ua/index.php/dp/article/view/13370