@article{1178241080,
author = {Klingenberg, Wilhelm},
title = {The index theorem for closed geodesics},
journal = {Tohoku Math. J. (2)},
volume = {26},
number = {4},
year = {1974},
pages = { 573-579},
language = {en},
url = {http://dml.mathdoc.fr/item/1178241080}
}
Klingenberg, Wilhelm. The index theorem for closed geodesics. Tohoku Math. J. (2), Tome 26 (1974) no. 4, pp. 573-579. http://gdmltest.u-ga.fr/item/1178241080/