@article{AIHPA_1990__53_4_359_0, author = {Collet, P. and Ledrappier, F.}, title = {Hyperbolic behavior of dynamical systems. {Foreword}}, journal = {Annales de l'I.H.P. Physique th\'eorique}, pages = {359--359}, publisher = {Gauthier-Villars}, volume = {53}, number = {4}, year = {1990}, mrnumber = {1096097}, language = {en}, url = {http://www.numdam.org/item/AIHPA_1990__53_4_359_0/} }