RadzievskiiG. V. (1996). Moduli of continuity defined by zero continuation of functions and <em class="a-plus-plus">K</em&gt;-functionals with restrictions. Ukrains’kyi Matematychnyi Zhurnal, 48(11), 1537-1554. Retrieved from https://umj.imath.kiev.ua/index.php/umj/article/view/5208