[1] DAS P. :
Oscillation and asymptotic behaviour of solutions for second order neutral delay differential equation. J. Indian Math. Soc. (N.S.) 60 (1994), 159-170.
MR 1292134
[2] DAS P.-MISRA N.:
A necessary and sufficient condition for the solution of a functional differential equation to be oscillatory or tend to zero. J. Math. Anal. Appl. 204 (1997), 78-87.
MR 1426981
[3] DETANG, ZHOU: Oscillation of neutral functional differential equations. Acta Math. Scientia 12 (1992), 42-50.
[4] ERBE L. H.-KAIKONG, QING:
Oscillation and nonoscillation properties of neutral differential equations. Canad. J. Math. 46 (1994), 284-297.
MR 1271215
[5] GYORI I.-LADAS G.:
Oscillation Theory of Delay-Differential Equations with Applications. Clarendon, Oxford, 1991.
MR 1168471
[6] KULENOVIC M. R. S.-LADAS G.-MEIMARIDOU A.:
Necessary and sujficient condition for oscillation of neutral differential equations. J. Austral. Math. Soc. Ser. B 28 (1987), 362-375.
MR 0868764
[7] LADAS G.-SFICAS Y. G.-STAVROULAKIS I. P.:
Necessary and sufficient condition for oscillation of higher order delay differential equations. Trans. Amer. Math. Soc. 285 (1984), 81-90.
MR 0748831
[8] LIU X. Z.-YU J. S.-ZHANG B. G.:
Oscillation and nonoscillation for a class of neutral differential equations. Differential Equations Dynam. Systems 1 (1993), 197-204.
MR 1258897 |
Zbl 0873.34056
[9] LU, WUDU:
Nonoscillation and oscillation of first order neutral equations with variable coefficients. J. Math. Anal. Appl. 181 (1994), 803-815.
MR 1264547 |
Zbl 0809.34083
[10] OLAH R.:
Oscillation of differential equation of neutral type. Hiroshima Math. J. 25 (1995), 1-10.
MR 1322598 |
Zbl 0831.34076
[11] PARHI N.-MOHANTY P. K.:
Maintenance of oscillation of neutral differential equations under the effect of a forcing term. Indian J. Pure Appl. Math. 26 (1995), 909-919.
MR 1347539 |
Zbl 0838.34082
[12] PARHI N.-MOHANTY P. K.:
Oscillatory behaviour of solutions of forced neutral differential equations. Ann. Polon. Math. 65 (1996), 1-10.
MR 1414747 |
Zbl 0874.34063
[13] PARHI N.-RATH R. N.:
On oscillation criteria for a forced neutral differential equation. Bull. Inst. Math. Acad. Sinica 28 (2000), 59-70.
MR 1750329 |
Zbl 0961.34059
[14] PARHI N.-RATH R. N.:
Oscillation criteria for forced first order neutral differential equations with variable coefficients. J. Math. Anal. Appl. 256 (2001), 525-541.
MR 1821755 |
Zbl 0982.34057
[15] PARHI N.-RATH R. N.:
On oscillation and asymptotic behaviour of solutions of forced first order neutral differential equations. Proc. Indian Acad. Sci. Math. Sci. Ill (2001), 337-350.
MR 1851095 |
Zbl 0995.34058
[16] PARHI N.-RATH R. N.:
On oscillation of forced non-linear neutral differential equations of higher order. Czechoslovak Math. J. (To appear).
MR 2018832