- boundedness (3)
- asymptotic behavior (2)
- bounded solution (2)
- initial value problem (2)
- lyapunov functional (2)
- maximum principle (2)
- nonlinear differential system (2)
- periodic solution (2)
- planar system (2)
- positive solution (2)
- uniform boundedness (2)
- $p$-laplacian (1)
- almost periodic nonlinearities (1)
- amplitude (1)
- asymptotic behavior of solution (1)
- asymptotic behavior of solutions (1)
- average-ion models (1)
- bernoulli number (1)
- bounded (1)
- bounded vector field (1)