Periodic boundary value problems for systems of second order differential equations
1973 ◽
Vol 13
(1)
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pp. 32-47
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2009 ◽
Vol 39
(3)
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pp. 843-852
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2014 ◽
Vol 49
(1-2)
◽
pp. 343-355
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1989 ◽
Vol 2
(3)
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pp. 131-138
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2003 ◽
Vol 281
(1)
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pp. 99-107
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1997 ◽
Vol 28
(6)
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pp. 983-997
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2004 ◽
Vol 298
(1)
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pp. 341-351
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2008 ◽
Vol 200
(1)
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pp. 123-132
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2013 ◽
Vol 37
(1)
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pp. 123-135
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