@misc{indiciae3bf76c13dde5,
  title = {Variational Principle for Eigenvalue Problems of Hamiltonian Systems.},
  author = {RD Benguria and MC Depassier},
  year = {1996},
  doi = {10.1103/physrevlett.77.2847},
  url = {https://pubmed.ncbi.nlm.nih.gov/10062067/},
  note = {Source identifier: 10062067}
}