Dual Morse index estimates for periodic solutions of Hamiltonian systems in some nonconvex superquadratic cases
2014 ◽
Vol 57
(8)
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pp. 1625-1638
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2009 ◽
Vol 214
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pp. 187-200
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2004 ◽
Vol 202
(2)
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pp. 284-305
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1998 ◽
Vol 145
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pp. 252-273
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