1. Oscillation of discrete analogues of delay equations;Erbe;Differential and Integral Equations,1989
2. Linearized oscillations for equations with piecewise constant arguments;Győri;Differential and Integral Equations,1989
3. Oscillation Theory of Delay Differential Equations with Applications;Győri,1991
4. Recent developments in the oscillation of delay difference equations;Ladas,1989
5. Sharp conditions for the oscillation of delay difference equations;Ladas;J. Applied Math. Simulation,1989