@misc{indiciae82f0cda55b39,
  title = {Quills, ballpoints, and now computers.},
  author = {R E Warren},
  year = {1985},
  doi = {10.1016/s0163-4453(85)92388-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/4031511/},
  note = {Source identifier: 4031511}
}