@article{1259943867, author = {NAKAGAWA, Hisao}, title = {Riemannian manifolds with many geodesic loops}, journal = {J. Math. Soc. Japan}, volume = {20}, number = {4}, year = {1968}, pages = { 648-654}, language = {en}, url = {http://dml.mathdoc.fr/item/1259943867} }
NAKAGAWA, Hisao. Riemannian manifolds with many geodesic loops. J. Math. Soc. Japan, Tome 20 (1968) no. 4, pp. 648-654. http://gdmltest.u-ga.fr/item/1259943867/