@misc{indiciae5d349c9284a4,
  title = {Black holes and temporal ordering.},
  author = {F D Peat},
  year = {1972},
  doi = {10.1038/239387a0},
  url = {https://pubmed.ncbi.nlm.nih.gov/12635293/},
  note = {Source identifier: 12635293}
}