@article{ASENS_1999_4_32_4_455_0,
     author = {Bedford, Eric and Smillie, John},
     title = {Polynomial diffeomorphisms of $C^2$ : {VII.} {Hyperbolicity} and external rays},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     pages = {455--497},
     publisher = {Elsevier},
     volume = {Ser. 4, 32},
     number = {4},
     year = {1999},
     doi = {10.1016/s0012-9593(99)80020-2},
     zbl = {0952.37008},
     mrnumber = {1693587},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/s0012-9593(99)80020-2/}
}