@misc{indiciae1824028182ce,
  title = {Sinus node echoes and concealed concealed conduction: additional sinus node phenomena confirmed in man by direct sinus node electrography.},
  author = {J A Reiffel and J T Bigger and K Ferrick and F D Livelli and J Gliklich and P Wang and R Bosner},
  year = {1985},
  doi = {10.1016/s0022-0736(85)80050-9},
  url = {https://pubmed.ncbi.nlm.nih.gov/4031729/},
  note = {Source identifier: 4031729}
}