@article{hal-01403496, author = {Celletti, A. and Fran\c coise , Jean-Pierre }, title = {Matrix-second order differential equations and chaotic Hamiltonian systems}, journal = {HAL}, volume = {1989}, number = {0}, year = {1989}, language = {en}, url = {http://dml.mathdoc.fr/item/hal-01403496} }
Celletti, A.; Françoise , Jean-Pierre . Matrix-second order differential equations and chaotic Hamiltonian systems. HAL, Tome 1989 (1989) no. 0, . http://gdmltest.u-ga.fr/item/hal-01403496/