@misc{indiciae691aff6b88c2,
  title = {Measuring flexibility.},
  author = {K Burton},
  year = {1991},
  doi = {10.1016/0003-6870(91)90385-u},
  url = {https://pubmed.ncbi.nlm.nih.gov/15676827/},
  note = {Source identifier: 15676827}
}