@article{4895,
  author = {H. Ritsch and Peter Zoller},
  title = {Dynamic quantum-noise reduction in multilevel-laser systems},
  year = {1992},
  journal = {Physical Review A},
  volume = {45},
  pages = {1881-1892},
  month = {Jan-02-1992},
  issn = {1050-2947},
  doi = {10.1103/PhysRevA.45.1881},
}