%0 Journal Article
%A O. Bertrand
%A B. Philippe
%T Counting the eigenvalues surrounded by a~closed curve
%J Sibirskij žurnal industrialʹnoj matematiki
%D 2001
%P 73-94
%V 4
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SJIM_2001_4_2_a4/
%G en
%F SJIM_2001_4_2_a4