Serdyuk АS, Stepanyuk Т. Estimates of the best m-term trigonometric approximations of classes of analytic functions . Dopov. Nac. akad. nauk Ukr. [Internet]. 2015 Feb. 28 [cited 2026 Jun. 20];(2):32-7. Available from: https://nasu-periodicals.org.ua/index.php/dp/article/view/13370