中国科学院数学与系统科学研究院期刊网
Preservation of Equilibria for Symplectic Methods Applied to Hamiltonian Systems
Ling-shu Wang, Ying Wang
Acta Mathematicae Applicatae Sinica(English Series) . 2010, (2): 219 -228 .  DOI: 10.1007/s10255-009-7145-2