By using integral averaging method and a generalized Riccati technique, sufficient conditions are established for the oscillation of solutions of forced nonlinear hyperbolic equations with functional arguments.
Forced Oscillations of Nonlinear Hyperbolic Equations with Functional Arguments via Riccati Method,
Applications and Applied Mathematics: An International Journal (AAM), Vol. 5,
3, Article 11.
Available at: https://digitalcommons.pvamu.edu/aam/vol5/iss3/11