@article{1250520826, author = {\^Otsuki, Nobukazu}, title = {Lyapunov-like functions and geodesic flows}, journal = {J. Math. Kyoto Univ.}, volume = {26}, number = {4}, year = {1986}, pages = { 559-569}, language = {en}, url = {http://dml.mathdoc.fr/item/1250520826} }
Ôtsuki, Nobukazu. Lyapunov-like functions and geodesic flows. J. Math. Kyoto Univ., Tome 26 (1986) no. 4, pp. 559-569. http://gdmltest.u-ga.fr/item/1250520826/