@misc{indiciae7b8a13332fe6,
  title = {Finding apparent horizons in numerical relativity.},
  author = {J Thornburg},
  year = {1996},
  doi = {10.1103/physrevd.54.4899},
  url = {https://pubmed.ncbi.nlm.nih.gov/10021181/},
  note = {Source identifier: 10021181}
}