@misc{indiciae57da273569de,
  title = {Vacuum spacetimes that admit no maximal slice.},
  author = {DM Witt},
  year = {1986},
  doi = {10.1103/physrevlett.57.1386},
  url = {https://pubmed.ncbi.nlm.nih.gov/10033436/},
  note = {Source identifier: 10033436}
}