%0 Journal Article %A V. I. Kachalov %A S. A. Lomov %T Smoothness of the solutions of differential equations with respect %J Doklady Akademii Nauk %D 1988 %P 805-808 %V 299 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1988_299_4_a7/ %G ru %F DAN_1988_299_4_a7