@misc{indiciaec54bd05a673d,
  title = {Correlation-function hierarchies in nonlinear quantum optics.},
  author = {CJ Mertens and JM Hasty and HH Roark and D Nowakowski and TA Kennedy},
  year = {1995},
  doi = {10.1103/physreva.52.742},
  url = {https://pubmed.ncbi.nlm.nih.gov/9912299/},
  note = {Source identifier: 9912299}
}