@misc{indiciae2b88307dbfdc,
  title = {Portable clinical tracking-task instrument.},
  author = {A R Potvin and J A Doerr and J T Estes and W W Tourtellotte},
  year = {1977},
  doi = {10.1007/bf02457991},
  url = {https://pubmed.ncbi.nlm.nih.gov/197331/},
  note = {Source identifier: 197331}
}