1. Articulate Instruments Ltd. (2012). Articulate Assistant Advanced User Guide: Version 2.16, Articulate Instruments Ltd.
2. Bateman, Nicoleta (2007). A Crosslinguistic Investigation of Palatalization. [Ph.D. dissertation, University of California San Diego].
3. Bates, Douglas, Maechler, Martin, Bolker, Ben, Walker, Steven, Christensen, Rune Haubo Bojesen, Singmann, Henrik, Dai, Bin, Scheipl, Fabian, Grothendieck, Gabor, and Green, Peter (2023, October 21). lme4 Package (Version 1.1–13). Computer Software: An R Package/Online Resource. Available online: https://cran.r-project.org/web/packages/lme4/index.html.
4. An ultrasound study of Connemara Irish palatalization and velarization;Bennett;Journal of the International Phonetic Association,2018
5. A general study of palatalization;Greenberg;Universals of Human Language. Phonology,1978