%0 Journal Article
%A M. G. Krein
%T On perturbation determinants and a trace formula for unitary and self-adjoint operators
%J Doklady Akademii Nauk
%D 1962
%P 268-271
%V 144
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1962_144_2_a4/
%G ru
%F DAN_1962_144_2_a4