@Article{ 
  CorGia20,
  author = { Corona, Dario and Giannoni, Fabio },
  title = { A New Approach for Euler-Lagrange Orbits on Compact Manifolds with Boundary },
  journal = { Symmetry },
  year = { 2020 },
  doi = { 10.3390/sym12111917 },
  volume = { 12 },
  number = { 11 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/6489/ },
  note = { cvgmt preprint}
}