%0 Journal Article %A V. F. Baklanovskaya %T On a method of studying the behavior of the difference of two solutions of nonlinear differential equations %J Doklady Akademii Nauk %D 1979 %P 793-796 %V 244 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1979_244_4_a0/ %G ru %F DAN_1979_244_4_a0