[1]
A. I. Stepanets, “ Certain remarks on approximation of the hing smoothness functions by the Fourier operators”, Ukr. Mat. Zhurn., vol. 44, no. 1, pp. 138–141, Feb. 1992, Accessed: Dec. 06, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/7806