Kamenev-type oscillation criteria for delay difference equations

Some oscillation criteria are established by Raccati transformation techniques for the following second-order nonlinear neutral difference equationΔ(pn (Δ(xn + cnxn - τ))γ) + qnxn - σβ = 0,n = 0,1,2 …which extend and include several oscillation criteria in [11], and also correct a theorem and its proof in [10].