%0 Journal Article %A Dmitry V. Khlopin %T On two-sided unidirectional mean value inequality in a Fréchet smooth space %J Ural mathematical journal %D 2023 %P 132-140 %V 9 %N 2 %U http://geodesic.mathdoc.fr/item/UMJ_2023_9_2_a10/ %G en %F UMJ_2023_9_2_a10