@misc{indiciae989b17a1a7b6,
  title = {An improved electronic pantograph.},
  author = {E Eidelberg and F Davis},
  year = {1977},
  doi = {10.1177/25.8.894011},
  url = {https://pubmed.ncbi.nlm.nih.gov/894011/},
  note = {Source identifier: 894011}
}