@misc{indiciae972b611c0bbb,
  title = {A-to-D conversion from paper records with a desktop scanner and a microcomputer.},
  author = {L E Widman and G L Freeman},
  year = {1989},
  doi = {10.1016/0010-4809(89)90033-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/2776443/},
  note = {Source identifier: 2776443}
}