Romanyuk, V. S. “Constructive Characteristic of Ho¨ Lder Classes and <em class="a-Plus-plus">M</Em&gt;-Term Approximations in the Multiple Haar Basis”. Ukrains’kyi Matematychnyi Zhurnal 66, no. 3 (March 25, 2014): 349–360. Accessed April 25, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/2137.