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Citation: Wang, Zhi Guo, Normal Form for Families of Hamiltonian Systems, Acta mathematica Sinica. English series (Print) , 23(7), 2007, pp. 1199-1216

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Citation: Wang, Zhi Guo et Wang, Yi Qian, Boundedness of solutions for a class of oscillating potentials without the twist condition, Acta mathematica Sinica. English series (Print) , 26(12), 2010, pp. 2387-2398