BabenkoV., BabenkoV., KovalenkoO., and ParfinovychN. “Some Sharp Landau-Kolmogorov–Nagy-Type Inequalities in Sobolev Spaces of Multivariate Functions”. Ukrains’kyi Matematychnyi Zhurnal 75, no. 10 (October 24, 2023): 1347 - 1353. Accessed July 27, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/7680.