@misc{indiciaed99db8309bdc,
  title = {Projection-operator method in the interaction picture.},
  author = {J Seke},
  year = {1987},
  doi = {10.1103/physreva.36.5841},
  url = {https://pubmed.ncbi.nlm.nih.gov/9898874/},
  note = {Source identifier: 9898874}
}