Electronic Journal of Differential Equations,
Vol. 2009(2009), No. 30, pp. 1-7.

Title: An oscillation criteria for second-order nonlinear
       differential equations with functional arguments
   
Authors: Jagmohan Tyagi (TIFR Centre For Appl. Math, Karnataka, India)
         Venkataramanarao Raghavendra (Indian Inst. of Technology Kanpur, India)

Abstract:
 We establish an oscillation criteria of the second-order nonlinear damped
 differential equation with functional arguments
 $$
 x''(t) + p(t)f(t, x(t), x'(t))x'(t)+ q(t)g(x(t),
 x[h(t)])=0, \quad t\in [t_0,\infty)\,.
 $$
 
Submitted July 19, 2008. Published February 09, 2009.
Math Subject Classifications: 34K15, 34C10.
Key Words: Nonlinear; functional differential equations; oscillation.