@misc{indiciae8ee0176a10d3,
  title = {Background fields in 2+1 topological gravity.},
  author = {A Toon},
  year = {1993},
  doi = {10.1103/physrevd.48.3720},
  url = {https://pubmed.ncbi.nlm.nih.gov/10016645/},
  note = {Source identifier: 10016645}
}