@misc{W1972653359,
  author = {R. E. Slusher and L. Hollberg and Bernard Yurke and Jerome Mertz and J. F. Valley},
  title = {Observation of Squeezed States Generated by Four-Wave Mixing in an Optical Cavity},
  year = {1985},
  howpublished = {Physical Review Letters},
  doi = {https://doi.org/10.1103/physrevlett.55.2409}
}