1. Pearson correlation coefficient;Benesty,2009
2. Mayan phonology
3. Dynamics of voice quality over the course of the English utterance;Bird;Paper presented at 19th International Congress of Phonetic Sciences,–9
4. Praat: Doing Phonetics by Computer [Computer Program]
https://www.fon.hum.uva.nl/praat/
5. A Landmark Underspecification Account of the Patterning of Glottal Stop;Borroff;Ph.D. thesis,2007