References
- Archangeli D, Pulleyblank D. 1994. Grounded Phonology. Cambridge, Massachusetts: MIT Press.
- Beddor PS, Harnsberger JD, Lindemann S. 2002. Language-specific patterns of vowel-to-vowel coarticulation: acoustic structures and their perceptual correlates. Journal of Phonetics 30: 591–627.
- Blevins J. 2004. Evolutionary Phonology: The Emergence of Sound Patterns. Cambridge: Cambridge University Press.
- Boyce SE, Krakow RA, Bell-Berti F, Gelfer CE. 1990. Converging sources of evidence for dissecting articulatory movements into core gestures. Journal of Phonetics 18: 173–188.
- Butler C. 1985. Statistics in Linguistics. Oxford: Basil Blackwell.
- Chomsky N, Halle M. 1968. The Sound Pattern of English. New York: Harper and Row.
- Flemming E. 2001. Scalar and categorical phenomena in a unified model of phonetics and phonology. Phonology 18(1): 7–44.
- Fowler CA. 1983. Realizm and unrealizm: a reply. Journal of Phonetics 11: 303–322.
- Green SB, Salking NJ, Akey TM. 2000. Using SPSS for Windows: Analyzing and Understanding Data. London: Prentice-Hall.
- Harris J. 1987. Non-structure-preserving rules in Lexical Phonology: south-eastern Bantu harmony. Lingua 73: 79–116.
- Hardcastle WJ, Hewlett N (eds). 1999. Co-articulation: Theory, Data and Techniques. Cambridge: Cambridge University Press.
- Huckvale M. 2010. Speech Filing System. Available at: www.phon.ucl.uk/resource/sfs/ [Accessed 26 March 2015].
- Hyman LM. 2001. Vowel harmony in Gunu. Studies in African Linguistics 30(2): 147–170.
- Hyman LM. 2002. Is there a right-to-left bias in vowel harmony? Submitted to Proceedings of the 9th International Phonology Meeting, Vienna, November 1, 2002.
- Jun J. 2004. Place Assimilation. In: Hayes B, Kirchner R, Steriade D (eds), Phonetically-Based Phonology. Cambridge: Cambridge University Press. pp. 58–86.
- Kockaert HJ. 1997. Vowel harmony in siSwati: An experimental study of raised and non-raised vowels. Journal of African Languages and Linguistics 18: 139–156.
- Kühnert B, Nolan, F. 1999. The origin of co-articulation. In: Hardcastle WJ, Hewlett N (eds), Co-articulation: Theory, Data and Techniques. Cambridge: Cambridge University Press. pp. 7–30.
- Magen HS. 1984. Vowel-to-vowel co-articulation in English and Japanese. Journal of the Acoustical Society of America Supplement 1, 75: S41.
- Manuel S. 1990. The role of contrast in limiting vowel-to-vowel co-articulation in different languages. Journal of the Acoustical Society of America 88: 1286–1298.
- Manuel S, Krakow RA. 1984. Universal aspects of vowel-to-vowel coarticulation. Haskins Laboratories Status Report on Speech Research, SR 77/78, 69–78.
- Ohala John J. 1994. Towards a universal, phonetically-based theory of vowel harmony. Proceedings of the third International Conference on Spoken Language Processing: 491–494.
- Pearce M. 2008. Kera phonology. PhD thesis, University College London, UK.
- Przezdziecki M. 2001. Vowel-to-vowel co-articulation in Yoruba: the seeds of ATR vowel harmony. In: Billery R, Lillehaugen B (eds), WCCFL 19 Proceedings. Somerville: Cascadilla Press. pp. 385–398.
- Recasens D. 1987. An acoustic analysis of V-to-C and V-to-V co-articulatory effects in Catalan and Spanish VCV sequences. Journal of Phonetics 15: 299–312.
- Taljaard PC, Snyman JW. 1993. An Introduction to Zulu phonetics. Cape Town: Marius Libbe Publishers.
- Xu Y, Liu F. 2006. Tonal alignment, syllable structure and coarticulation: Toward an integrated model. Italian Journal of Linguistics 18: 125–159.
- Ziervogel D, Mabuza EJ. 1985. A grammar of the Swati language. Pretoria: JL van Schaik Ltd.