@misc{indiciae737d3504da61,
  title = {Schild's null strings in flat and curved backgrounds.},
  author = {S Kar},
  year = {1996},
  doi = {10.1103/physrevd.53.6842},
  url = {https://pubmed.ncbi.nlm.nih.gov/10019970/},
  note = {Source identifier: 10019970}
}