Oscillatory properties of first order linear functional differential equations
2002 ◽
Vol 49
(7)
◽
pp. 929-945
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2002 ◽
Vol 52
(3)
◽
pp. 513-530
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2003 ◽
2003 ◽
Vol 55
(11)
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pp. 1853-1884
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1989 ◽
Vol 15
(2)
◽
pp. 415-432
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