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Oscillation and nonoscillation of delay differential equations. (English) Zbl 0346.34054

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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[1] Bradley, J. S., Oscillation theorems for a second order delay equation, J. Differential Equations, 8, 397-403 (1970) · Zbl 0212.12102
[2] Coffman, C. V.; Wong, J. S. W., Oscillation and nonoscillation theorems for second order ordinary differential equations, Funkcial. Ekvac., 15, 119-130 (1972) · Zbl 0287.34024
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[5] Levitan, B. M., Some problems of the theory of almost periodic functions I, Uspehi Mat. Nauk, 2, 133-192 (1947) · Zbl 0033.11901
[6] Naito, M., Oscillation theorems for a damped nonlinear differential equation, Proc. Japan Acad., 50, 104-108 (1974) · Zbl 0305.34056
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[8] Onose, H., Oscillation and asymptotic behavior of solutions of retarded differential equations of arbitrary order, Hiroshima Math. J., 3, 333-360 (1973) · Zbl 0299.34098
[9] Wong, J. S. W.; Weiss, L., Second order oscillation with retarded argument, Ordinary Differential Equations, 581-596 (1972), New York: Academic Press, New York
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