@misc{indiciaecaf99826d7f3,
  title = {Automated data acquisition using an IBM key punch.},
  author = {E R Christophersen},
  year = {1970},
  doi = {10.1901/jeab.1970.14-71},
  url = {https://pubmed.ncbi.nlm.nih.gov/5448260/},
  note = {Source identifier: 5448260}
}