@misc{indiciae4a48414e6855,
  title = {A digital recording system for respiratory variables.},
  author = {G W Bradley and K Y Mustafa},
  year = {1971},
  doi = {10.1016/0034-5687(71)90013-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/5552776/},
  note = {Source identifier: 5552776}
}