%0 Journal Article
%A Kh. Zholondek
%T On the versality of a~family of symmetric vector fields in the plane
%J Sbornik. Mathematics
%D 1984
%P 463-492
%V 48
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_1984_48_2_a11/
%G en
%F SM_1984_48_2_a11