@misc{indiciaef108886e9fee,
  title = {Midsternal kinetocardiography with solid system recorder.},
  author = {S Zoneraich and O Zoneraich and A H Douglas},
  year = {1968},
  url = {https://pubmed.ncbi.nlm.nih.gov/5238727/},
  note = {Source identifier: 5238727}
}