@misc{indiciaea50e47209fa5,
  title = {s-order nondiagonal quasiprobabilities.},
  author = {de Oliveira FA},
  year = {1992},
  doi = {10.1103/physreva.45.5104},
  url = {https://pubmed.ncbi.nlm.nih.gov/9907597/},
  note = {Source identifier: 9907597}
}