References
- Arino , O. , Gyori , I. and Jawhari , A. 1984 . Oscillation criteria in delay equations . J. Diff. Eqs , 53 : 115 – 123 .
- Bellman , R. and Cooke , K.L. 1963 . Differential-Difference Equations , New York : Academic Press .
- Berman , A. and Plemmons , R. J. 1979 . Nonnegative Matrices in the Mathematical Sciences , New York : Academic Press .
- Driver , R.D. 962 . Existence and stability of solutions of a delay-differential system . Arch. Rational Mech. Anal , 10 : 401 – 426 .
- Eller , J. 1986 . Stability of quasimonotone linear autonomous functional-differential equations via M-matrices, in Differential Equations qualitative theory . Colloq. Math. Soc. Janos Bolyai , I,II : 251 – 281 .
- Gyori , I. 1988 . Asymptotic stability and oscillations of linear non-autonomous delay differential equations . Proceedings of International Conference in Colombus . 1988 .
- Gyori , I. “ Global attractivity in delay differential equations using a mixed monotone technique ” .
- Gyori , I. “ Interaction between oscillations and global asymptotic stability in delay differential equations ” .
- Hale , J. 1977 . Theory of Functional Differential Equations,Applied Mathematical Sciences , New York : Springer-Verlag .
- Hayes , N. D. 1950 . Roots of the transcendental equation associated with a certain difference-differential equation . J. London Math. Soc , 25 : 226 – 232 .
- Kolmonovskii , V.B. and Nosov , V. R. 1986 . Stability of Functional Differential Equations , London, New York : Academic Press .
- Myskis , A.D. 1972 . Linear Differential Equations with Retarded Argument . Moscow, Nauka . 1972 .
- Smith , H. 1986 . Monotone semiflows generated by functional differential equations . Technical Report ,86-10 ,
- Yoneyama , T. and Segie , J. 1988 . On the stability region of scalar delay-differential equations . J. Math. Anal, and Appl , 134 : 408 – 425 .