Summary: In the case of oscillatory potentials, we give sufficient conditions for the oscillation of a forced nonlinear second-order differential equations with delayed argument of the form
in the linear (=1) and the superlinear () case. See, A. H. Nasr [Proc. Am. Math. Soc. 126, 123–125 (1998; Zbl 0891.34038)] and J. S. W. Wong [J. Math. Anal. Appl. 231, 235–240 (1999; Zbl 0922.34029)].