@misc{indiciae697ff99dbd21,
  title = {An approach to accessibility analysis.},
  author = {B R Luce and P L Stamps},
  year = {1976},
  doi = {10.2105/ajph.66.6.581},
  url = {https://pubmed.ncbi.nlm.nih.gov/937604/},
  note = {Source identifier: 937604}
}