[1]
V. I. Rukasov and O. I. Stepanets, “Best ‘Continuous’ $n$-Term Approximations in the Spaces $S_\phi ^p$”, Ukr. Mat. Zhurn., vol. 55, no. 5, pp. 663–670, May 2003, Accessed: Dec. 06, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/3941