New existence of hyperbolic orbits for a class of singular Hamiltonian systems
Crossref DOI link: https://doi.org/10.1186/s13661-015-0349-x
Published Online: 2015-05-30
Published Print: 2015-12
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Wu, Dong-Lun
Zhang, Shiqing
License valid from 2015-05-30