@misc{indiciaef98f8dee16ae,
  title = {A mechanical microdensitometer.},
  author = {U W Arndt and J B Leigh and J F Mallett and K E Twinn},
  year = {1969},
  doi = {10.1088/0022-3735/2/5/301},
  url = {https://pubmed.ncbi.nlm.nih.gov/5800487/},
  note = {Source identifier: 5800487}
}