1. Oscillation Theorems for Nonlinear Second Order Differential Equations with a Nonlinear Damping Term
2. Recent results on oscillation of solutions of forced and perturbed nonlinear differential equations of even order in “Stability of Dynamical Systems: Theory and Applications”, pp. 17–72, Lecture Notes in Pure and Appl. Math., No. 28, Dekker, New York 1977
3. Basic results on oscillation for differential equations with deviating arguments