@misc{indiciae1c1975403571,
  title = {Atrial demand and AV sequential pacemakers.},
  author = {A Castellanos and V Medina-Ravell and B V Berkovits and R M Luceri and L Zaman and R J Myerburg},
  year = {1983},
  url = {https://pubmed.ncbi.nlm.nih.gov/6357442/},
  note = {Source identifier: 6357442}
}