@misc{indiciaef05909469c1d,
  title = {[Lung surgery in elderly patients].},
  author = {M I Perel'man and R N Lebedeva and L K Bronskaia},
  year = {1974},
  url = {https://pubmed.ncbi.nlm.nih.gov/4457714/},
  note = {Source identifier: 4457714}
}