@article{GDZPPN002306867,
title = {The Closed Geodesics of a Special Manifold.},
journal = {Mathematische Annalen},
volume = {196},
year = {1972},
pages = {155-160},
zbl = {0285.53037},
url = {http://dml.mathdoc.fr/item/GDZPPN002306867}
}
Tsagas, Grigorios. The Closed Geodesics of a Special Manifold.. Mathematische Annalen, Tome 196 (1972) pp. 155-160. http://gdmltest.u-ga.fr/item/GDZPPN002306867/