@article{PM_1998_1998_1_a28,
     author = {Lacomba, Ernesto A. and Reyes, J. Guadalupe},
     title = {Sistemas hamiltonianos no singulares y flujos geod\'esicos sobre superficies con curvatura negativa.},
     journal = {Publicacions matem\`atiques},
     pages = {267-299},
     publisher = {mathdoc},
     volume = {42},
     number = {2},
     year = {1998},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PM_1998_1998_1_a28/}
}