@misc{indiciae85313409666e,
  title = {Nonequilibrium statistical quantum field theory for open systems.},
  author = {HE Kandrup},
  year = {1989},
  doi = {10.1103/physrevd.39.2253},
  url = {https://pubmed.ncbi.nlm.nih.gov/9959905/},
  note = {Source identifier: 9959905}
}