@misc{indiciae1ee251412d3c,
  title = {Inexpensive pneumotachometer (PTM).},
  author = {S M ROSS and F F KAO},
  year = {1961},
  doi = {10.1152/jappl.1961.16.2.380},
  url = {https://pubmed.ncbi.nlm.nih.gov/13743648/},
  note = {Source identifier: 13743648}
}