1. V. S. Afraimovich, V. V. Bykov, L. P. Shil’nikov. On the appearence and structure of the Lorenz attractor. Dokl. Acad. Sci. USSR, 234: 336–339, 1977
2. J. F. Alves. SRB measures for nonhyperbolic systems with multidimensional expansion. PhD thesis, IMPA, 1997. To appear Ann. Sci. École Norm. Sup.
3. M. Benedicks, L. Carleson. The dynamics of the Hénon map. Annals of Math., 133: 73–169, 1991
4. C. Bonatti, L. J. Díaz. Nonhyperbolic transitive diffeomorphisms. Annals of Math., 143: 357–396, 1996
5. C. Bonatti, L. J. Diaz, E. Pujals. A C1-generic dichotomy for diffeomorphisms: weak forms of hyperbolicity or infinitely many sinks or sources. Preprint, 1999