@misc{indiciae1cdd190f451d,
  title = {Observational cosmology using characteristic numerical relativity},
  author = {Walt, P J. van der and Bishop, N T},
  year = {2010},
  doi = {10.1103/physrevd.82.084001},
  url = {https://www.osti.gov/biblio/21433007},
  note = {Source identifier: 21433007}
}