1316 Zhang, Z., Boyce, S., Espy-Wilson, C. & Tiede, M. (2003).  Acoustic strategies for production of American English gretroflex /r/. Proceedings of the 15th International Congress of Phonetic Sciences.  Barcelona, Spain. August 3-9, 2003. Universitat Auto`noma de Barcelona

580   Zinna, D. R., Liberman, I. Y. & Shankweiler, D. (1986) Children's sensitivity to factors influencing vowel reading. Reading Research Quarterly, 465-480.

816   Zsiga, L. (1992). A mismatch between morphological and prosodic domains: evidence from two Igbo rules. Phonology, 9, 101-135.