Potapov М.К., and Simonov Б.В. 2021. “Inequalities Refining Relationships Between Mixed Modules of Smoothness In Metrics of $L_p$ and $L_\infty$”. Bulletin of L.N. Gumilyov Eurasian National University. Mathematics, Computer Science, Mechanics Series 134 (1):19-34. https://doi.org/10.32523/2616-678X-2020-134-1-19-34.