%0 Journal Article %A Ya. S. Bugrov %T Differential properties of the solutions of certain higher-order differential equtions %J Doklady Akademii Nauk %D 1963 %P 259-261 %V 148 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1963_148_2_a3/ %G ru %F DAN_1963_148_2_a3