@misc{indiciae193a60682d8f,
  title = {Optimum phase-shift estimation and the quantum description of the phase difference.},
  author = {A Luis and J Perina},
  year = {1996},
  doi = {10.1103/physreva.54.4564},
  url = {https://pubmed.ncbi.nlm.nih.gov/9914010/},
  note = {Source identifier: 9914010}
}