%0 Journal Article
%A Vesselin Petkov
%A Gregori Popov
%T On the Lebesgue measure of the periodic points of a contact mainfold.
%J Mathematische Zeitschrift
%D 1995
%P 91-102
%V 218
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZ_1995__218_4_174715/
%F MZ_1995__218_4_174715