@misc{indiciae9de6f0d35880,
  title = {[Sputum tensiometry--a practicable procedure?].},
  author = {E Stressemann},
  year = {1968},
  doi = {10.1007/bf01728552},
  url = {https://pubmed.ncbi.nlm.nih.gov/5727487/},
  note = {Source identifier: 5727487}
}