Kofanov, V. A. “Inequalities for Derivatives of Functions in the Spaces Lp”. Ukrains’kyi Matematychnyi Zhurnal 60, no. 10 (October 25, 2008): 1338 – 1349. Accessed December 6, 2025. https://umj.imath.kiev.ua/index.php/umj/article/view/3248.