%0 Journal Article
%A S. N. Naboko
%T On the structure of roots of operator-valued functions with positive imaginary part in the classes $\sigma_p$
%J Doklady Akademii Nauk
%D 1987
%P 538-541
%V 295
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1987_295_3_a4/
%G ru
%F DAN_1987_295_3_a4