1. Lectures of Smale on Differential Topology;Abraham,1962
2. On one parameter families of diffeomorphisms;Brunovsky;Comment. Math. Univ. Carolinae,1970
3. “Ordinary Differential Equations,”;Hartman,1964
4. Neighborhoods of hyperbolic sets;Hirsch;Invent. Math.,1970
5. M. Hirsch and C. Pugh, Stable manifolds for hyperbolic sets, Global Analysis, Proc. Symp. Pure Math. 14, Amer. Math. Soc., Providence, Rhode Island, 1970, 133-163.