@article{10911,
  author = {Wesley Brittin and W. Chappell},
  title = {The Wigner Distribution Function and Second Quantization in Phase Space},
  year = {1962},
  journal = {Reviews of Modern Physics},
  volume = {34},
  pages = {620-627},
  month = {Jan-10-1962},
  issn = {0034-6861},
  doi = {10.1103/RevModPhys.34.620},
}