@misc{indiciaeaf68039ed195,
  title = {The killing pencil.},
  author = {J Voigt},
  year = {1970},
  doi = {10.1177/002580247001000111},
  url = {https://pubmed.ncbi.nlm.nih.gov/5504139/},
  note = {Source identifier: 5504139}
}