%0 Journal Article
%A A. S. Markus
%T Eigenvalues and singular values of the sum and product of linear operators
%J Doklady Akademii Nauk
%D 1962
%P 34-36
%V 146
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1962_146_1_a8/
%G ru
%F DAN_1962_146_1_a8