@misc{indiciae2005381dc186,
  title = {Uniqueness and nonuniqueness in the Einstein constraints.},
  author = {Harald P Pfeiffer and James W York},
  year = {2005},
  doi = {10.1103/physrevlett.95.091101},
  url = {https://pubmed.ncbi.nlm.nih.gov/16197202/},
  note = {Source identifier: 16197202}
}