@misc{indiciae7a8b5048c821,
  title = {Formant frequency development: 15 to 36 months.},
  author = {H R Gilbert and M P Robb and Y Chen},
  year = {1997},
  doi = {10.1016/s0892-1997(97)80003-3},
  url = {https://pubmed.ncbi.nlm.nih.gov/9297669/},
  note = {Source identifier: 9297669}
}