Babenko, V. F., Parfinovych, N. V., & Pichugov, S. A. (2010). Sharp Kolmogorov-type inequalities for norms of fractional derivatives of multivariate functions. Ukrains’kyi Matematychnyi Zhurnal, 62(3), 301–314. Retrieved from https://umj.imath.kiev.ua/index.php/umj/article/view/2869