1. Voice onset time in stop consonants: acoustic analysis and synthesis;Abramson,1965
2. Laryngeal behavior, the speech signal and phonological simplicity;Abramson,1970
3. Discriminability along the voicing continuum: cross-language tests;Abramson,1970
4. Some experiments on the perception of synthetic speech sounds;Cooper;Journal of the Acoustical Society of America,1952
5. El español hablado en Colombia y su atlas lingüistico;Flórez,1964