@misc{indiciae58943a40a85f,
  title = {Nonlinear wave equations for relativity.},
  author = {van Putten MH and DM Eardley},
  year = {1996},
  doi = {10.1103/physrevd.53.3056},
  url = {https://pubmed.ncbi.nlm.nih.gov/10020302/},
  note = {Source identifier: 10020302}
}