Babenko, V. F., and M. B. Vakarchuk. “On Inequalities of Kolmogorov-Hörmander Type for Functions Bounded on a Discrete Net”. Ukrains’kyi Matematychnyi Zhurnal 49, no. 7 (July 25, 1997): 988–992. Accessed December 5, 2025. https://umj.imath.kiev.ua/index.php/umj/article/view/5090.