@misc{indiciae2c70f639fe33,
  title = {[Continuous automatic analysis of the ECG with the aid of a computer with cardiosignal input directly from the patient. 1. Isolation of the active signal of the ECG, identification and measurement of its elements].},
  author = {E Sh Khalfen and O K Rybak and S I Nazarov},
  year = {1977},
  url = {https://pubmed.ncbi.nlm.nih.gov/72840/},
  note = {Source identifier: 72840}
}