| [1] ERBE L H,FREEDMAN H I,LIU X Z,et al.Comparison Principles for Impulsive Parabolic Equations with Applications to Models of Single Species Growth [J].J. Austral. Math. Soc.,1991,32B(4):382-400.[2] CHAN C,KE L.Remarks on Impulsive Quenching Problems [J].Proc. Dyn. Syst. Appl.,1994,1(1):59-62.[3] LUO J W.Oscillation of Hyperbolic Partial Differential Equations with Impulses [J].Appl. Math. Comput.,2002,133(2-3):309-318.[4] CUI B T,LIU Y Q,DENG F Q.Some Oscillations Problems for Impulsive Hyperbolic Differential Systems with Several Delays [J].Appl. Math. Comput.,2003,146(2-3):667-679.[5] LIU A P,XIAO L,LIU T.Oscillation of Nonlinear Impulsive Hyperbolic Equations with Several Delays [J].Electronic Journal of Differential Equation,2004(24):1-6.[6] LI W N,HAN M A,MEMG F W.Necessary and Sufficient Conditions for Oscillation of Impulsive Parabolic Differential Equations with Delays [J].Applied Mathematics Letters,2005,18(10):1 149-1 155.[7] LUO L P.Forced Oscillation of Nonlinear Impulsive Delay Parabolic Partial Differential Equations [J].Math. Appl.,2007,20(2):357-360.[8] GILBARG D,TRUDINGER N S.Elliptic Partial Equations of Second Order [M].Berlin:Springer-Verlag,1977. |
