@misc{indiciae72884b571140,
  title = {Visual lung-sound characterization by time-expanded wave-form analysis.},
  author = {R L Murphy and S K Holford and W C Knowler},
  year = {1977},
  doi = {10.1056/nejm197704282961704},
  url = {https://pubmed.ncbi.nlm.nih.gov/846543/},
  note = {Source identifier: 846543}
}