[1] FEČKAN M.: Bifurcations of heteroclinic orbits of diffeomorphisms. Appl. Math. 36 (1991), 355-367. MR 1125637

[2] PALMER K. J.: Exponential dichotomies, the shadowing lemma and transversal homoclinic points. In: Dynam. Report. Ser. Dynam. Syst. Appl. 1, Wiley, Chichester, 1988, pp. 265-306. MR 0945967 | Zbl 0676.58025

[3] PALMER K. J.: Exponential dichotomies and transversal homoclinic points. J. Differential Equations 55 (1984), 225-256. MR 0764125 | Zbl 0508.58035

[4] MEDVEĎ M.: Fundamentals of Dynamical Systems and Bifurcation Theory. Adam Hilger, Bristol, 1992. MR 1170124 | Zbl 0777.58027

[5] CHOW S.-N.-HALE J. K.: Methods of Bifurcation Theory. Springer-Verlag, New York, 1982. MR 0660633 | Zbl 0487.47039

[6] BATTELLI F.-LAZZARI C.: Exponential dichotomies, heteroclinic orbits, and Melnikov functions. J. Differential Equations 86 (1990), 342-366. MR 1064015 | Zbl 0713.34055