SkrypnikI. V. “On the Hölder Property for Functions from the Class $B_{q, s}$”. Ukrains’kyi Matematychnyi Zhurnal 45, no. 7 (July 25, 1993): 1020–1028. Accessed November 24, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/5895.