@misc{indiciae9f6ba72d5626,
  title = {Studies in P wave synchronization.},
  author = {P Samet and C Castillo and W H Bernstein},
  year = {1967},
  doi = {10.1016/0002-9149(67)90534-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/6016420/},
  note = {Source identifier: 6016420}
}