%0 Journal Article
%A Kryzhevich, Sergey G.
%A Volpert, Vitaly A.
%T Different types of solvability conditions for differential operators
%J Electronic Journal of Differential Equations
%D 2006
%V 2006
%I mathdoc
%U http://geodesic.mathdoc.fr/item/EJDE_2006__2006__a16/
%G en
%F EJDE_2006__2006__a16