@misc{indiciaeba66e831707b,
  title = {Maximum phonation time and air usage during phonation. Clinical study.},
  author = {M Hirano and Y Koike and H Von Leden},
  year = {1968},
  doi = {10.1159/000263198},
  url = {https://pubmed.ncbi.nlm.nih.gov/5671971/},
  note = {Source identifier: 5671971}
}