@misc{indiciae84adc5ebc34a,
  title = {Geometric and diffractive orbits in the scattering from confocal hyperbolas.},
  author = {ND Whelan},
  year = {1995},
  doi = {10.1103/physreve.51.3778},
  url = {https://pubmed.ncbi.nlm.nih.gov/9963067/},
  note = {Source identifier: 9963067}
}