%0 Journal Article %A E. A. Sevast'yanov %T Dependence of differential properties of a~function on the speed of its rational approximations in the metrics of $L_p$ %J Matematičeskie zametki %D 1974 %P 79-90 %V 15 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1974_15_1_a8/ %G ru %F MZM_1974_15_1_a8