@misc{indiciae44b9d79ec19c,
  title = {Inversionless laser from a closed multilevel system.},
  author = {Y Zhu and OC Mullins and M Xiao},
  year = {1993},
  doi = {10.1103/physreva.47.602},
  url = {https://pubmed.ncbi.nlm.nih.gov/9908955/},
  note = {Source identifier: 9908955}
}