@misc{indiciaec51b59cc26f8,
  title = {Kinematics of a null loop.},
  author = {N Charlton},
  year = {1996},
  doi = {10.1103/physrevd.53.5494},
  url = {https://pubmed.ncbi.nlm.nih.gov/10019834/},
  note = {Source identifier: 10019834}
}