@misc{indiciae1eee7ce1f553,
  title = {On self-dual gravity.},
  author = {JD Grant},
  year = {1993},
  doi = {10.1103/physrevd.48.2606},
  url = {https://pubmed.ncbi.nlm.nih.gov/10016510/},
  note = {Source identifier: 10016510}
}