%0 Journal Article %A Vitalii V. Arestov %T Approximation of differentiation operators by bounded linear operators in lebesgue spaces on the axis and related problems in the spaces of $(p,q)$-multipliers and their predual spaces %J Ural mathematical journal %D 2023 %P 4-27 %V 9 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/UMJ_2023_9_2_a0/ %G en %F UMJ_2023_9_2_a0