@misc{indiciaec2e9923a5086,
  title = {An inexpensive goniometer.},
  author = {H Roberts},
  year = {1973},
  doi = {10.1093/ptj/53.7.766},
  url = {https://pubmed.ncbi.nlm.nih.gov/4713804/},
  note = {Source identifier: 4713804}
}