We are concerned with the oscillation of the forced second-order neutral nonlinear differential equations with delayed argument in the form . No restriction is imposed on the potentials , , and to be nonnegative. Our methodology is somewhat different from those of previous authors.
"Oscillation Theorems for Second-Order Forced Neutral Nonlinear Differential Equations with Delayed Argument." Int. J. Differ. Equ. 2010 (SI2) 1 - 15, 2010. https://doi.org/10.1155/2010/181784