Bifurcation and stability of families of hyperbolic vector fields in dimension three Sergio Plaza, Jaime Vera (1997) Annales de l'I.H.P. Analyse non linéaire
Bifurcations and stability of families of diffeomorphisms Sheldon E. Newhouse, Jacob Palis, Floris Takens (1983) Publications Mathématiques de l'IHÉS