@misc{indiciae00061e24ece7,
  title = {A circumferential recording microphotometer.},
  author = {T C O'CONNELL and A G BARKOW},
  year = {1950},
  doi = {10.1063/1.1745654},
  url = {https://pubmed.ncbi.nlm.nih.gov/15430665/},
  note = {Source identifier: 15430665}
}