Oscillation of second order nonlinear neutral differential equations

Consider the second order nonlinear neutral delay differential equation[r(t)((x(t)+p(t)x([email protected]))^')^@a]^'+f(t,x([email protected]))=0(E),where @t and @s are nonnegative constants, and @a is a quotient of positive odd integers. Some new oscillatory criteria for Eq. (E) are established. Several examples which dwell upon the importance of our results are also illustrated.