Nonconstant periodic solutions with any fixed energy for singular Hamiltonian systems
2019 ◽
Vol 24
(4)
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pp. 1617-1625
2013 ◽
Vol 29
(6)
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pp. 1205-1218
2005 ◽
Vol 25
(2)
◽
pp. 275
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Keyword(s):
1994 ◽
Vol 52
(1-3)
◽
pp. 147-154
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Keyword(s):