References
- Athanassov , Z.S. 1982 . Perturbation theorems for nonlinear systems of ordinary differential equations . J. Math. Anal.Appl , 86 : 194 – 207 .
- Brauer , F. 1972 . Perturbations of nonlinear systems of differential equations IV . J. Math. Anal. Appl , 37 : 214 – 222 .
- Brauer , F. and Strauss , A. Perturbations of nonlinear systems of differential equations.
- Dannan , F.M. and Elaydi , S. 1986 . Lipschitz stability of nonlinear systems of differential equations . J. Math. Anal. Appl , 113 : 562 – 577 .
- Shou Chuan , HU , Lakshimkantham , V. and Rama Mohan Rao , M. Nonlinear variation of parameters formula for integro-differen-tial equations of volterra type , To Appear In J.M.A.A. .
- Lakshmikantham , V. and Leela , S. 1969 . Differential and integral inequalities , Vol. I , New York : Academic Press .
- Rama Mohan Rao , M. and Srinivas , P. 1985 . Asymptolic behavior of solutions of volterra integro-differential equations . Proc. Amer. Math. Soc , 94 : 55 – 60 .