1. Ades, A. E. Vowels, consonants, speech and nonspeech. Psychological Review, 1977, 84, 524–530.
2. Alekin, R. O., Klaas, Y. A., & Chistovich, L. A. Human reaction time in the copying of aurally perceived vowels. Soviet Physics-Acoustics, 1962, 8, 17–22.
3. Aslin, R. N., & Pisoni, D. B. Some developmental processes in speech perception. In G. Yeni-Komshian, J. F. Kavanaugh, & C. A. Ferguson (Eds.), Child phonology. Vol. 2: Perception. New York: Academic Press, 1980.
4. Aslin, R. N., Pisoni, D. B., Hennessy, B. L., & Percy, A. J. Discrimination of voice onset time by human infants: New findings and implications for the effects of early experience. Child Development, 1981, 52, 1135–1145.
5. Baru, A. V. Discrimination of synthesized vowels [a] and [i] with varying parameters in dog. In G. Fant & M. A. A. Tatham (Eds.), Auditory analysis and the perception of speech. London: Academic Press, 1975.