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Oscillation of solutions of nonlinear delay differential equations. (English) Zbl 0323.34060
##### MSC:
 34K99 Functional-differential equations (including equations with delayed, advanced or state-dependent argument) 34C10 Oscillation theory, zeros, disconjugacy and comparison theory for ordinary differential equations
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##### References:
 [1] КИГУРАДЗЕ И. Т.: К вопросу колеблемости решений нелинейных дифференциальных уравнений. Дифф. уравнения 8, 1965, 999-1006. · Zbl 0314.35045 [2] KUSANO T., ONOSE H.: Oscillation of Solutions of Nonlinear Differential Delay Equations of Arbitrary Order. Hiroshima Math. J. 1, 1972, 1-13. · Zbl 0269.34064 [3] LADAS G.: Oscillation and Asymptotic Behavior of Solutions of Differential Equations with Retarded Argument. J. diff. Equations 10, 1971, 281-290. · Zbl 0216.12002 [4] LIČKO I., ŠVEC M.: Le caractére oscillatoire des solutions de l’équation $$y^{(n)}+f(x)y^{\alpha }=0$$, $$n>1$$. Czech. Math. J. 13, 1963, 481-491. · Zbl 0123.28202 [5] MARUŠIAK P.: Note on the Ladas Paper on Oscillation and Asymptotic Behavior of Solutions of Differential Equations with Retarded Argument. J. diff. Equation 1, 1973, 450-456. [6] MARUŠIAK P.: Oscillation of Solutions of the Delay Differential Equation $$y^{(2n)}(t)+\sum^m_{i=1}p_i(t) f_j(y[h_i(t)])=0$$,  $$n\geq 1$$. Čas. Pěst. Mat. 1, 1974, 131-141. [7] ONOSE H.: Some Oscillation Criteria for n-th Order Nonlinear Delay-Differential Equations. Hiroshima Math. J. 2, 1971, 171-176. · Zbl 0282.34050 [8] STAIKOS V. A., SFICAS Y. G.: Oscillatory and Asymptotic Behavior of Functional Differential Equations. J. diff. Equations 3, 1972, 426-437. · Zbl 0247.34076 [9] ШЕВЕЛО. В. Н., ВАРЕХ И. В.: О некоторых свойствах решний дифференциальных уравнений с запаздыванием. Укр. Мат. Ж. 6, 1972, 807-813. · Zbl 1156.34335
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