@misc{indiciae7483206620da,
  title = {Optimal indices for testing parkinsonian rigidity.},
  author = {H Teräväinen and J K Tsui and E Mak and D B Calne},
  year = {1989},
  doi = {10.1017/s0317167100028857},
  url = {https://pubmed.ncbi.nlm.nih.gov/2731084/},
  note = {Source identifier: 2731084}
}