@article{IM_1974__24_142275,
     author = {John M. Franks},
     title = {Time {Dependent} {Stable} {Diffeomorphisms.}},
     journal = {Inventiones mathematicae},
     pages = {163--172},
     year = {1974},
     volume = {24},
     zbl = {0275.58011},
     url = {http://geodesic.mathdoc.fr/item/IM_1974__24_142275/}
}