%0 Journal Article
%A A. P. Makhmudov
%A Z. S. Aliyev
%T Nondifferentiable perturbations of spectral problems for a pair of
%J Doklady Akademii Nauk
%D 1988
%P 551-554
%V 301
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1988_301_3_a8/
%G ru
%F DAN_1988_301_3_a8