Interval oscillation criteria for second order neutral nonlinear differential equations

Some oscillation criteria for the second order neutral nonlinear differential equationare established. New oscillation criteria are different from most known ones in the sense that they are based on the information only on a sequence of subintervals of <f>[t0,∞)</f>, rather than on the whole half-line. Our results are more natural according to the Sturm Separation Theorem. [Copyright &y& Elsevier]