%0 Journal Article
%A L. È. Èl'sgol'ts
%T Estimation of the number of critical points of a continuous mapping of a manifold onto a circle
%J Uchenye Zapiski Moskovskogo Gosudarstvennogo Universiteta
%D 1954
%P 34-38
%V 165
%N 165
%I mathdoc
%U http://geodesic.mathdoc.fr/item/UZMU_1954_165_165_a1/
%G ru
%F UZMU_1954_165_165_a1