%0 Journal Article
%A V. S. Medvedev
%T The bifurcation of the ``blue sky catastrophe'' on two-dimensional manifolds
%J Matematičeskie zametki
%D 1992
%P 118-125
%V 51
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_1992_51_1_a13/
%G ru
%F MZM_1992_51_1_a13