@misc{indiciae21bcc051a565,
  title = {Isolating the Medelec RS232 data interface.},
  author = {R A Royall},
  year = {1985},
  doi = {10.1007/bf02446875},
  url = {https://pubmed.ncbi.nlm.nih.gov/4021575/},
  note = {Source identifier: 4021575}
}