On the oscillation of solutions of nonlinear functional differential equations
2012 ◽
Vol 218
(19)
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pp. 9974-9979
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2014 ◽
Vol 197
(1)
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pp. 45-65
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2012 ◽
Vol 616-618
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pp. 2137-2141
1989 ◽
Vol 142
(2)
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pp. 521-541
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1968 ◽
Vol 21
(3)
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pp. 643-694
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