- Dugundji , J. and Granas , A. 1982 . "Fixed Point Theory", Monograohie Matematyczne , Vol. I , Warsawa : PNW .
- Frigon , M. , Granas , A. and Guennoun , Z. 1988 . Acad. Sci. Vol. 306 , 7747 – 750 . Paris
- Hale , J. 1977 . "Theory of Functional Differential Equations" , New York : Springer–Verlag .
- Lee J. O'Regan D. Existence results for differential delar equations–I J. Differential Equations to appear
- Lee , J. and O“Regan , D. 1988 . Ann. Pol. Math. , 48 : 247 – 252 .
- Ntouyas S. Sficas Y. Tsamatos P. Existence results for initial value problems for neutral fnnctional differential equations J. Differential Equaions, to appear
- Wintner , A. 1945 . Amer. J. Math. , 67 : 277 – 284 .
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