%0 Journal Article %A A. V. Babin %T Construction and investigation of solutions of differential equations by methods in the theory of approximation of functions %J Sbornik. Mathematics %D 1985 %P 141-167 %V 51 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1985_51_1_a9/ %G en %F SM_1985_51_1_a9