@misc{indiciae6107693b6c32,
  title = {Sum rules for collisional processes.},
  author = {J Oreg and WH Goldstein and A Bar-Shalom and M Klapisch},
  year = {1991},
  doi = {10.1103/physreva.44.310},
  url = {https://pubmed.ncbi.nlm.nih.gov/9905682/},
  note = {Source identifier: 9905682}
}