@misc{indiciaea28302cd2fc2,
  title = {Generalized quantum Langevin equations from the forward-backward path integral.},
  author = {K Tsusaka},
  year = {1999},
  doi = {10.1103/physreve.59.4931},
  url = {https://pubmed.ncbi.nlm.nih.gov/11969445/},
  note = {Source identifier: 11969445}
}