@misc{indiciaef22bc4dcb630,
  title = {Guiding the blind.},
  author = {R L BEURLE},
  year = {1951},
  doi = {10.1136/bmj.1.4718.1319},
  url = {https://pubmed.ncbi.nlm.nih.gov/14839256/},
  note = {Source identifier: 14839256}
}