@misc{indiciaed890d68b2e7a,
  title = {Semiclassical matrix elements from periodic orbits.},
  author = {B Eckhardt and S Fishman and K Müller and D Wintgen},
  year = {1992},
  doi = {10.1103/physreva.45.3531},
  url = {https://pubmed.ncbi.nlm.nih.gov/9907400/},
  note = {Source identifier: 9907400}
}