KnopovaV. P. “Continuity of Certain Pseudodifferential Operators in Spaces of Generalized Smoothness”. Ukrains’kyi Matematychnyi Zhurnal 58, no. 5 (May 25, 2006): 638–652. Accessed September 1, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/3482.