@article{FORUM_1995__7_1_186444,
     author = {Guido Gentile},
     title = {A proof existence of whiskered tori with quasi flat homoclinic intersections in a class of almost integrable hamiltonian systems.},
     journal = {Forum mathematicum},
     pages = {709--754},
     publisher = {mathdoc},
     volume = {7},
     number = {1},
     year = {1995},
     zbl = {0841.58038},
     url = {http://geodesic.mathdoc.fr/item/FORUM_1995__7_1_186444/}
}