Periodic solutions of hamiltonian systems with superquadratic potential
1986 ◽
Vol 143
(1)
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pp. 1-46
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2014 ◽
Vol 21
(1)
◽
pp. 1-18
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2014 ◽
Vol 57
(8)
◽
pp. 1625-1638
◽
2009 ◽
Vol 214
(1)
◽
pp. 187-200
◽
Keyword(s):
Keyword(s):
2004 ◽
Vol 202
(2)
◽
pp. 284-305
◽