Babenko VF, Korneichuk NP, Pichugov SA. Kolmogorov-type inequalities for mixed derivatives of functions of many variables. Ukr. Mat. Zhurn. [Internet]. 2004May25 [cited 2024May4];56(5):579-94. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/3779