%0 Journal Article
%A Petkov, Vesselin
%A Popov, Georgi
%T Semi-classical trace formula and clustering of eigenvalues for Schrödinger operators
%J Annales de l'I.H.P. Physique théorique
%D 1998
%P 17-83
%V 68
%N 1
%I Gauthier-Villars
%U http://archive.numdam.org/item/AIHPA_1998__68_1_17_0/
%G en
%F AIHPA_1998__68_1_17_0