@article{1250129856,
author = {Churchill, R.C. and Pecelli, G. and Rod, D.L.},
title = {Hyperbolic structures in hamiltonian systems},
journal = {Rocky Mountain J. Math.},
volume = {7},
number = {4},
year = {1977},
pages = { 439-444},
language = {en},
url = {http://dml.mathdoc.fr/item/1250129856}
}
Churchill, R.C.; Pecelli, G.; Rod, D.L. Hyperbolic structures in hamiltonian systems. Rocky Mountain J. Math., Tome 7 (1977) no. 4, pp. 439-444. http://gdmltest.u-ga.fr/item/1250129856/