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@article{AM_2000_151_3_a1, author = {Enrique R. Pujals and Mart{\'\i}n Sambarino}, title = {Homoclinic tangencies and hyperbolicity for surface diffeomorphisms}, journal = {Annals of mathematics}, publisher = {mathdoc}, volume = {151}, number = {3}, year = {2000}, url = {http://geodesic.mathdoc.fr/item/AM_2000_151_3_a1/} }
Enrique R. Pujals; Martín Sambarino. Homoclinic tangencies and hyperbolicity for surface diffeomorphisms. Annals of mathematics, Tome 151 (2000) no. 3. http://geodesic.mathdoc.fr/item/AM_2000_151_3_a1/