@misc{indiciae367cd35e0b82,
  title = {A capacitance plethysmograph for measuring small volume changes.},
  author = {H C Riddle and J W Brydon and D A Willoughby},
  year = {1974},
  url = {https://pubmed.ncbi.nlm.nih.gov/4846598/},
  note = {Source identifier: 4846598}
}