%0 Journal Article
%A V. V. Ditkin
%T An iterative method for solving an eigenvalue problem in the case of a multiple spectrum
%J Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki
%D 1987
%P 1771-1779
%V 27
%N 12
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ZVMMF_1987_27_12_a1/
%G ru
%F ZVMMF_1987_27_12_a1