@misc{indiciae535197b51130,
  title = {Simple biofeedback device to reduce excessive vocal intensity.},
  author = {R McGillivray and K Proctor-Williams and B McLister},
  year = {1994},
  doi = {10.1007/bf02512536},
  url = {https://pubmed.ncbi.nlm.nih.gov/7934264/},
  note = {Source identifier: 7934264}
}