@article{GDZPPN00242911X, title = {On the Number of Closed Geodesics on Projective Spaces.}, journal = {Mathematische Zeitschrift}, volume = {185}, year = {1984}, pages = {265-272}, zbl = {0524.53028}, url = {http://dml.mathdoc.fr/item/GDZPPN00242911X} }
Rademacher, Hans-Bert. On the Number of Closed Geodesics on Projective Spaces.. Mathematische Zeitschrift, Tome 185 (1984) pp. 265-272. http://gdmltest.u-ga.fr/item/GDZPPN00242911X/