References

LARGE CONTRACTION AND EXISTENCE OF PERIODIC SOLUTIONS IN INFINITE DELAY VOLTERRA INTEGRO-DIFFERENTIAL EQUATIONS


[1] M. Adivar, M. Islam and Y. N. Raffoul, Existence of periodic and positive periodic solutions in totally nonlinear delay differential equations, submitted.

[2] E. R. Kaufmann and Y. N. Raffoul, Periodic solutions for a neutral nonlinear dynamical equation on a time scale, J. Math. Anal. Appl. 319(1) (2006), 315-325.

[3] E. R. Kaufmann and Y. N. Raffoul, Periodicity and stability in neutral nonlinear dynamic equations with functional delay on a time scale, Electron. J. Differential Equations 27 (2007), 12.

[4] Y. N. Raffoul, Periodic solutions for neutral nonlinear differential equations with functional delay, Electron. J. Differential Equations 102 (2003), 1-7.

[5] Y. N. Raffoul, Positive periodic solutions in neutral nonlinear differential equations, E. J. Qualitative Theory of Diff. Equ. 16 (2007), 1-10.

[6] D. R. Smart, Fixed Points Theorems, Cambridge Univ. Press, Cambridge, 1980.