Oscillation Criteria for nth Order Neutral Functional Differential Equations

In this paper we establish some new criteria for the oscillation of nth order neutral functional differential equations of the form dndtn(x(t)+cx(t−h)+c*x(t+h*))+qx(t−g)+px(t+g*)=0, n is even, where c, c*, h, h*, p, and q are real numbers and g and g* are positive constants