@misc{indiciae723a17f54b64,
  title = {Exact density-matrix calculations for simple open systems.},
  author = {MJ Collett},
  year = {1988},
  doi = {10.1103/physreva.38.2233},
  url = {https://pubmed.ncbi.nlm.nih.gov/9900629/},
  note = {Source identifier: 9900629}
}