@misc{indiciae49c34bcab656,
  title = {Explosive free-electron-laser instability in a plasma-filled waveguide.},
  author = {Bl Qian and Yg Liu and Tc Yang},
  year = {1993},
  doi = {10.1103/physreve.47.4625},
  url = {https://pubmed.ncbi.nlm.nih.gov/9960551/},
  note = {Source identifier: 9960551}
}