1. F. V. Atkinson, On second-order differential inequalities, to appear.
2. Contributions to the research of the oscillation and the asymptotic behavior of solutions of ordinary differential equations;Kartsatos;Bull. Soc. Math. Grèce,1969
3. Maintenance of oscillations under the effect of a small forcing term;Kartsatos;J. Differential Equations,1971
4. Maintenance of oscillations under the effect of a periodic forcing term;Kartsatos,1972
5. Perturbations causing oscillations of functional-differential equations;Kartsatos,1974