%0 Journal Article
%A M. А. Barnovska
%T Asymptotic representation of the spectral matrix of a fourth-order differential operator
%J Doklady Akademii Nauk
%D 1965
%P 1223-1225
%V 162
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1965_162_6_a2/
%G ru
%F DAN_1965_162_6_a2