%0 Journal Article
%A V. I. Burenkov
%A B. Th. Tuyen
%T On spectral stability problem for a pair of self-adjoint elliptic differential operators on bounded open sets
%J Eurasian mathematical journal
%D 2019
%P 84-88
%V 10
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/EMJ_2019_10_3_a6/
%G en
%F EMJ_2019_10_3_a6