%0 Journal Article
%A M. M. Malamud
%T On transformation operators for ordinary differential equations
%J Trudy Moskovskogo matematičeskogo obŝestva
%D 1990
%P 68-97
%V 53
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MMO_1990_53_a2/
%G ru
%F MMO_1990_53_a2