@misc{indiciae0c3e5aa51413,
  title = {The relation between threshold voltage and frequency in square-wave alternating current stimulation.},
  author = {J W DUYFF and W G WALTER},
  year = {1950},
  url = {https://pubmed.ncbi.nlm.nih.gov/15419001/},
  note = {Source identifier: 15419001}
}