@misc{indiciae2dfbd554511e,
  title = {Using rays better. IV. Theory for refraction and reflection.},
  author = {G W Forbes},
  year = {2001},
  doi = {10.1364/josaa.18.002557},
  url = {https://pubmed.ncbi.nlm.nih.gov/11583273/},
  note = {Source identifier: 11583273}
}