[1]
V. S. Romanyuk, “Multiple Haar basis and m-term appriximations for functions from the Besov classes. I”, Ukr. Mat. Zhurn., vol. 68, no. 4, pp. 551–562, Apr. 2016, Accessed: Dec. 05, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/1860