A perturbation of a periodic Hamiltonian system
1999 ◽
Vol 38
(8)
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pp. 1003-1022
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2019 ◽
Vol 24
(2)
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pp. 127-144
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2017 ◽
Vol 22
(7)
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pp. 808-823
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1989 ◽
Vol 6
(5)
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pp. 331-346
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