@misc{indiciae1e977d7cc4d7,
  title = {Q-function approach to a two-photon laser.},
  author = {N Lu},
  year = {1990},
  doi = {10.1103/physreva.42.6756},
  url = {https://pubmed.ncbi.nlm.nih.gov/9903976/},
  note = {Source identifier: 9903976}
}