TY  - JOUR
AU  - Vesselin Petkov
AU  - Gregori Popov
TI  - On the Lebesgue measure of the periodic points of a contact mainfold.
JO  - Mathematische Zeitschrift
PY  - 1995
SP  - 91
EP  - 102
VL  - 218
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZ_1995__218_4_174715/
ID  - MZ_1995__218_4_174715
ER  -