@article{GDZPPN002443562,
title = {On the Lebesgue measure of the periodic points of a contact mainfold.},
journal = {Mathematische Zeitschrift},
volume = {220},
year = {1995},
pages = {91-102},
zbl = {0816.58008},
url = {http://dml.mathdoc.fr/item/GDZPPN002443562}
}
Petkov, Vesselin; Popov, Gregori. On the Lebesgue measure of the periodic points of a contact mainfold.. Mathematische Zeitschrift, Tome 220 (1995) pp. 91-102. http://gdmltest.u-ga.fr/item/GDZPPN002443562/