[1] Liang H Y, Li Q L, Zhang Z G. New oscillatory criteria for higher order nonlinear neutral delay differential equation. Nonlinear Anal, 2008, 69:1719-1731
[2] Huang Z, Chen Z. Oscillation criteria for second order nonlinear neutral delay differential equations. Adv Difference Equ, 2010, 32:103-129
[3] Gao J F. Oscillations analysis of numerical solutions for neutral delay differential equations. Int J Comput Math, 2011, 88:2648-2665
[4] Ahmed F N, Ahmad R R, Din U K S, Noorani M S M. Some further results on oscillations for neutral delay differential equations with variable coefficients. Abstr Appl Anal, 2014, Article ID:579023
[5] Ahmed F N, Ahmad R R, Din U K S, Noorani M S M. Oscillation criteria of first order neutral delay differential equations with variable coefficients. Abstr Appl Anal, 2013, Article ID:489804
[6] Karpuz B. Sufficient conditions for the oscillation and asymptotic beaviour of higher order dynamic equations of neutral type. Appl Math Comput, 2013, 221:453-462
[7] Barbarossa M V, Hadeler K P, Kuttler C. State-dependent neutral delay equations from population dynamics. J Math Biol, 2014, 69:1027-1056
[8] Hu Q W, Zhao X Q. Global dynamics of a state-dependent delay model with unimodal feedback. J Math Anal Appl, 2013, 399:133-146
[9] Milton J G. Time delays and the control of biological systems an overview. IFAC Papers on Line, 2015, 48:87-92
[10] Györi I, Ladas G. Oscillation Theory of Delay Differential Equations. New York:Clarendon Press, 1991
[11] Gopalsamy K. Stability and Oscillations in Delay Differential Equations of Population Dynamics. New York:Springer, 1992
[12] Agwo H A. On the oscillation of delay differential equations with real coefficients. Int J Math Math Sci, 1999, 22:573-578
[13] Arino O, Györi I. Necessary and sufficient condition for oscillation of a neutral differential system with several delays. J Differential Equations, 1989, 81:98-105
[14] Guo S B, Shen Y J, Shi B B. Necessary and sufficient conditons of oscillation in first order neutral delay differential equations. Abstr Appl Anal, 2014, Article ID:623713
[15] Al-Amri I R. On the oscillation of first order neutral delay differential equations with real coefficients. Int J Math Math Sci, 2002, 29:245-249
[16] Györi I, Ladas G. Oscillation Theory of Delay Equations with Applications. Oxford:Clarendon Press, 1991
[17] Tang X H. Linearized oscillation of first order nonlinear neutral delay differential equations. J Math Anal Appl, 2001, 258:194-208 |