@misc{indiciaeff91a29c4011,
  title = {Marking the spot.},
  author = {E Epstein},
  year = {1989},
  doi = {10.1111/j.1524-4725.1989.tb03160.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/2921400/},
  note = {Source identifier: 2921400}
}