%0 Journal Article
%A S. P. Novikov
%T Multivalued functions and functionals. An analogue of the Morse theory
%J Doklady Akademii Nauk
%D 1981
%P 31-35
%V 260
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1981_260_1_a6/
%G ru
%F DAN_1981_260_1_a6