Necessary and sufficient conditions for bounded oscillations of higher order delay differential equations of Euler's type
Necessary and sufficient conditions for eventually vanishing oscillatory solutions of functional equations with small delays.
Necessary and sufficient conditions for finally vanishing oscillatory solutions in second order delay equations
Necessary and sufficient conditions for oscillation of delay equations with constant coefficients
Necessary and sufficient conditions for oscillation of neutral equation
Nonlinear delay-differential equations with small lag.
Nonlinear oscillations in disconjugate forced functional equations with deviating arguments.
Nonoscillation Of Nonlinear Retarded Differential Equations
Nonoscillation theorems for functional differential equations of arbitrary order.
Nonoscillatory solutions of a second order nonlinear delay differential equation
Nonoscillatory solutions of differential equations with deviating argument
Note on the oscillation of differential equation with advanced argument
Note on the oscillation of differential equations with deviating argument
Note on the oscillation of linear delay differential equations
Note on the oscillatory behavior of bounded solutions of higher order differential equation with retarded argument
Note on the oscillatory behaviour of bounded solutions of a higher order differential equation with retarded argument