@misc{indiciae3fa6cca78e7c,
  title = {Statistical methods for vectorcardiographic directions.},
  author = {T D Downs and J Liebman},
  year = {1969},
  doi = {10.1109/tbme.1969.4502609},
  url = {https://pubmed.ncbi.nlm.nih.gov/5781562/},
  note = {Source identifier: 5781562}
}