@misc{indiciae2087434546af,
  title = {Re-entry in the bundle branches studied by pacing techniques.},
  author = {R A Spurrell and E Sowton},
  year = {1975},
  doi = {10.1159/000397640},
  url = {https://pubmed.ncbi.nlm.nih.gov/1136894/},
  note = {Source identifier: 1136894}
}