@misc{indiciaee57e0acb5f2e,
  title = {One-atom maser.},
  author = {D Meschede and H Walther and G Müller},
  year = {1985},
  doi = {10.1103/physrevlett.54.551},
  url = {https://pubmed.ncbi.nlm.nih.gov/10031549/},
  note = {Source identifier: 10031549}
}