%0 Journal Article
%A V. V. Dubrovskii
%T Estimation of the difference of spectral functions with brackets
%J Doklady Akademii Nauk
%D 1996
%P 452-453
%V 351
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1996_351_4_a3/
%G ru
%F DAN_1996_351_4_a3