@misc{indiciae4459b9d67d48,
  title = {Free-electron laser gain without bunching.},
  author = {RH Pantell and J Feinstein and W Ding},
  year = {1989},
  doi = {10.1103/physreva.40.1436},
  url = {https://pubmed.ncbi.nlm.nih.gov/9902278/},
  note = {Source identifier: 9902278}
}