@article{IM_1969__9_142000,
     author = {M. HIRSCH and J. PALIS and C. PUGH and M. SHUB},
     title = {Neighborhoods of {Hyperbolic} {Sets.}},
     journal = {Inventiones mathematicae},
     pages = {121--134},
     publisher = {mathdoc},
     volume = {9},
     year = {1969},
     zbl = {0191.21701},
     url = {http://geodesic.mathdoc.fr/item/IM_1969__9_142000/}
}