%0 Journal Article
%A L. A. Kotko
%T The behavior of the eigenfunctions and eigenvalues of elliptic boundary value problems under variation of the domain
%J Differencialʹnye uravneniâ
%D 1973
%P 307-319
%V 9
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1973_9_2_a12/
%G ru
%F DE_1973_9_2_a12