Existence and multiplicity results for nonlinear periodic boundary value problems
2010 ◽
Vol 72
(9-10)
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pp. 3635-3642
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2003 ◽
Vol 281
(1)
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pp. 99-107
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2009 ◽
Vol 19
(1)
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pp. 80-104
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2016 ◽
Vol 5
(4)
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pp. 195-214
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2009 ◽
Vol 3
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pp. 501-509
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1997 ◽
Vol 28
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pp. 983-997
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