@misc{indiciaec43bf51c7817,
  title = {The transfer of selected image data to a computer using a conductive tablet.},
  author = {R J Green and W J Perkins and E A Piper and B F Stenning},
  year = {1979},
  doi = {10.1016/0141-5425(79)90158-4},
  url = {https://pubmed.ncbi.nlm.nih.gov/537347/},
  note = {Source identifier: 537347}
}