Existence and multiplicity of homoclinic orbits for the second order Hamiltonian systems
2010 ◽
Vol 366
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pp. 569-581
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2011 ◽
Vol 15
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pp. 255-271
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2014 ◽
Vol 69
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pp. 151-159
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1995 ◽
Vol 168
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1994 ◽
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2009 ◽
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pp. 1417-1423
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