1. Maintenance of oscillations under the effect of a periodic forcing term;Kartsatos,1972
2. Recent results on oscillation of solutions of forced and perturbed nonlinear differential equations of even order;Kartsatos,1977
3. Oscillation of functional differential equations with general deviating arguments;Kitamura;Hiroshima Math. J.,1985
4. Inequalities;Hardy,1988
5. Oscillation theorems for nonlinear differential equations of second order;Grace;J. Math. Anal. Appl.,1992