@misc{indiciaef23f77904665,
  title = {An item-difficulty based speech discrimination test.},
  author = {R H Margolis and J P Millin},
  year = {1971},
  doi = {10.1044/jshr.1404.865},
  url = {https://pubmed.ncbi.nlm.nih.gov/5163916/},
  note = {Source identifier: 5163916}
}