@misc{indiciae07dc51003015,
  title = {High-harmonic generation in hydrogenic ions.},
  author = {L Pan and KT Taylor and CW Clark},
  year = {1989},
  doi = {10.1103/physreva.39.4894},
  url = {https://pubmed.ncbi.nlm.nih.gov/9901851/},
  note = {Source identifier: 9901851}
}