[2] S. R. Grace and B. S. Lalli:
Oscillation of nonlinear second order neutral delay differential equations. Rad. Mat. 3 (1987), 77–84.
MR 0933634
[3] S. R. Grace and B. S. Lalli:
Oscillation and asymptotic behavior of certain second order neutral differential equations. Rad. Mat. 5 (1989), 121–126.
MR 1012728
[4] S. R. Grace and B. S. Lalli:
Oscillation theorems for second order functional differential equations with damping. Bull. Instit. Math. Academia Sinica 13 (1985), 183–292.
MR 0805021
[5] M. K. Grammatikopoulos, G. Ladas and A. Meimaridou:
Oscillation and asymptotic behavior of higher order neutral differential equations with variable coefficients. Chines Ann. Math. Ser. B 9 (1988), 322–338.
MR 0968469
[6] J. Jaroš and T. Kusano:
Oscillation properties of first order nonlinear functional differential equations of neutral type. Diff. and Integral Equations 4 (1991), 425–436.
MR 1081192
[9] I. T. Kiguradze:
On the oscillations of equation $\frac{{^mu}}{{t^m}}+a(t)|u|^n\mathop {\mathrm sgn} u=0$. Mat. Sb. 65 (1964), 172–187. (Russian)
MR 0173060 |
Zbl 0135.14302
[10] R. G. Koplatadze and T. A. Chanturija:
On oscillatory and monotone solutions of first order differential equations with deviating arguments. Differential’nye Uravnenija 18 (1982), 1463–1465. (Russian)
MR 0671174