%0 Journal Article
%A P. A. Shvartsman
%T Analytic properties of a positively directed symplectic curve in the neighborhood of a branch point of its spectrum
%J Doklady Akademii Nauk
%D 1968
%P 1273-1275
%V 183
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1968_183_6_a9/
%G ru
%F DAN_1968_183_6_a9