MR3099036 Tongxing LI, Yuri V. ROGOVCHENKO and Chenghui ZHANG Tongxing LI, Yuri V. ROGOVCHENKO and Chenghui ZHANG Oscillation of Second-Order Neutral Differential Equations Funkcialaj Ekvacioj. Serio Internacia 56 2013 111--120 http://fe.math.kobe-u.ac.jp/FE/FullPapers/56-1/56_111.pdf http://www.ams.org/mathscinet-getitem?mr=MR3099036 We study oscillatory behavior of a class of second-order neutral differential equations relating oscillation of these equations to existence of positive solutions to associated first-order functional differential inequalities. Our assumptions allow applications to differential equations with both delayed and advanced arguments, and not only. New theorems complement and improve a number of results reported in the literature. Two illustrative examples are provided. Oscillation, Neutral differential equations, Delayed arguments, Advanced arguments, Positive solutions, Comparison. 34K11. 56-111 2013 Oscillation of Second-Order Neutral Differential Equations Tongxing LI, Yuri V. ROGOVCHENKO and Chenghui ZHANG Tongxing LI, Yuri V. ROGOVCHENKO and Chenghui ZHANG
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