@misc{indiciae5dee29585632,
  title = {A computer program for calculation and interpretation of pulmonary function studies.},
  author = {J H Ellis and S P Perera and D C Levin},
  year = {1975},
  doi = {10.1378/chest.68.2.209},
  url = {https://pubmed.ncbi.nlm.nih.gov/1097204/},
  note = {Source identifier: 1097204}
}