[1]
V. S. Romanyuk, “Multiple Haar Basis and its Properties”, Ukr. Mat. Zhurn., vol. 67, no. 9, pp. 1253–1264, Sep. 2015, Accessed: Feb. 16, 2026. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/2063