@article{sun_2011, title={Oscillation of Certain Second-Order Sub-Half-Linear Neutral Impulsive Differential Equations}, volume={2011}, DOI={10.1155/2011/195619}, abstractNote={By introducing auxiliary functions, we investigate the oscillation of a class of second-order sub-half-linear neutral impulsive differential equations of the form[r(t)ϕβ(z(t))]+p(t)ϕα(x(σ(t)))=0,  tθk,Δϕβ(z(t))|t=θk+qkϕα(x(σ(θk)))=0,Δx(t)|t=θk=0,whereβ>α>0,  z(t)=x(t)+λ(t)x(τ(t)).Several oscillation criteria for the above equation are established in both the case0λ(t)1and the case-1<-μλ(t)0,which generalize and complement some existing results in the literature. Two examples are also given to illustrate the effect of impulses on the oscillatory behavior of solutions to the equation.}, publisher={Hindawi Limited}, author={Sun}, year={2011} }