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1. A. Capietto, J. Mawhin and F. Zanolin, Continuation theorems for periodic perturbations of autonomous systems, Trans. Amer. Math. Soc. 329, (1992), 41-72. 2. J.K. Hale, H. Kocak, Dynamics and Bifurcations, Springer Verlag, (1991). 3. J. Mawhin, Equivalence theorems for nonlinear operator equations and coincidence degree theory for some mappings in locally convex topological vector spaces, J. Differential Equations. 12, (1972), 610-636. 4. John B. Conway, A course in functional analysis, Springer Verlag, (1990). 5. M. Toda, Theory of nonlinear lattices, Springer Verlag, (1989). 6. N.G. Lloyd, Degree theory, Cambridge Univ. Press, (1978). 7. Pedro J. Torres, Periodic motions of forced infinite lattices with nearest neighbor interaction, Z. Angew. Math. Phys. 51, (2000), no.3, 333-345. 8. R.L. Burden, J.D. Faires, Numerical analysis, Brooks/Cole, (1997).
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