Existence and positivity of solutions for a nonlinear periodic differential equation
2013 ◽
Vol 34
(1)
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pp. 17-27
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2003 ◽
Vol 33
(4)
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pp. 1261-1277
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Keyword(s):
1996 ◽
Vol 126
(3)
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pp. 643-663
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2015 ◽
Vol 252
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pp. 446-456
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Keyword(s):
1974 ◽
Vol 17
(3)
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pp. 332-344
1996 ◽
Vol 202
(3)
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pp. 1027-1039
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