Periodic solution of second order degenerate differential equation in Banach spaces
1975 ◽
Vol 19
(3)
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pp. 261-263
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2003 ◽
Vol 82
(11)
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pp. 1029-1038
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2009 ◽
Vol 2009
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pp. 1-14
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1960 ◽
Vol 33
(2)
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pp. 301-308
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2020 ◽
Vol 32
(3)
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pp. 259-274
2019 ◽
Vol 149
(5)
◽
pp. 1135-1152
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