BabenkoV. F., and SpectorS. A. “Estimates for Wavelet Coefficients on Some Classes of Functions”. Ukrains’kyi Matematychnyi Zhurnal 59, no. 12 (December 25, 2007): 1594–1600. Accessed July 27, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/3415.