Differential equations - Oscillation theory.

Almost periodic oscillations and waves by: (Language materials, printed)

Half-linear differential equations by: (Language materials, printed)

Vibration, Dynamical Systems, Control.

Dynamical Systems and Ergodic Theory.

Special Functions.

Differential equations

Differential equations, Linear.

Mathematics.

Fourier Analysis.

Almost periodic functions.

Differential equations, Nonlinear.

Partial Differential Equations.