@misc{indiciae0e79ad71fe75,
  title = {A highly selective amplitude discriminator.},
  author = {P Eskelinen},
  year = {1973},
  doi = {10.1109/tbme.1973.324198},
  url = {https://pubmed.ncbi.nlm.nih.gov/4708768/},
  note = {Source identifier: 4708768}
}