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By using averaging function and the approach developed by Philos and Kong, Kamenev- type and interval oscillation criteria are established for the even order differential equation with distributed deviating arguments, (A2) g ∈ C 1 ((t0,∞) ×(α,β),R), g(t,ξ) t for all t t0, ξ ∈ (α,β), g(t,ξ) is non- decreasing with respect to t and ξ , respectively, and lim t→∞, inf ξ ∈(α,β) g(t,ξ )= ∞;

Oscillation criteria for certain even order differential equations with distributed deviating arguments