@misc{indiciae9cfdb35f4401,
  title = {A vectorcardiograph for assessing implanted cardiac pacemakers.},
  author = {D L Thomas and G D Green},
  year = {1974},
  doi = {10.1007/bf02477220},
  url = {https://pubmed.ncbi.nlm.nih.gov/4465581/},
  note = {Source identifier: 4465581}
}