%0 Journal Article
%A S. P. Novikov
%T Algebro-topological approach to reality problems. Real action variables in the theory of finite-gap solutions of the Sine-Gordon equations
%J Zapiski Nauchnykh Seminarov POMI
%D 1984
%P 177-196
%V 133
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ZNSL_1984_133_a12/
%G ru
%F ZNSL_1984_133_a12