@misc{indiciae91555c8f89e5,
  title = {Ventilation studies with krypton-81m.},
  author = {P Georgi and I Vogt-Moykopf and F Helus and H Ostertag},
  year = {1979},
  doi = {10.1055/s-0028-1096277},
  url = {https://pubmed.ncbi.nlm.nih.gov/542943/},
  note = {Source identifier: 542943}
}