References
- Graef , J. R. , Grammatikopoulos , M. K and Spikes , P. W . Asymptotic and oscillatory behavior of solutions of first order nonlinear neutral delay differential equations . , J. Math. Anal. Appl ,
- Graef , J. R. , Grammatikopoulos , M. K and Spikes , P. W . 1989 . Behavior of the nonoscillatory solutions of first order neutral delay differential equations . Differential Equations, Proceedings of the EQUADIFF Conference , : 265 – 272 .
- Grammatikopoulos , M. K. , Grove , E. A and Ladas , G . 1986 . Oscillations of first order neutral delay differential equations . J. Math. Anal. Appl , 120 : 510 – 520 .
- Grammatikopoulos , M. K. , Grove , E. A and Ladas , G . 1986 . Oscillation and asymp¬totic behavior of neutral differential equations with deviating arguments . Applicable Anal , 22 : 1 – 19 .
- Grammatikopoulos , M. K. , Ladas , G and Meimaridou , A . 1988 . Oscillation and asymptotic behavior of higher order neutral equations with variable coefficients, . Chinese Ann. Math. Ser , 9 : 322 – 328 .
- Grammatikopoulos , M. K. , Ladas , G and Sficas , Y. G . 1986 . Oscillation and asymp¬totic behavior of neutral equations with variable coefficients, . Rad. Mat , 2 : 279 – 303 .
- Grammatikopoulos , M. K. and Stavroulakis , I. P . 1986 . Oscillations of neutral differential equations , 2
- Grammatikopoulos , M. K. and Stavroulakis , I. P . 1986 . Necessary and sufficient conditions for oscillation of neutral equations with deviating arguments , 2
- Ladas , G. and Sficas , Y. G . 1986 . Oscillations of neutral delay differential equations, . Canad. Math. Bull , 29 : 438 – 445 .
- Ladas , G. and Sficas , Y. G . 1986 . Oscillations of higher-order neutral equations . , J. Austral. Math. Soc. Ser. B , 27 : 502 – 511 .
- Sficas , Y. G. and Stavroulakis , I. P . 1987 . Necessary and sufficient conditions for oscillations of neutral differential equations . J. Math. Anal. Appl , 123 : 494 – 507 .