1. Diachronic tone splits and voicing shifts in Thai: some perceptual data;A S Abramson;Haskins Laboratories Status Report on Speech Research,1978
2. The coarticulation of tones: an acoustic study of Thai;A S Abramson;Haskins Laboratories: Status Report on Speech Research SR,1975
3. Diachronic tone splits and voicing shifts in Thai: some perceptual data;S Abramson;Haskins Laboratories Status Report on Speech Research,1978
4. Tone features;S R Anderson;Tone: A Linguistic Survey,1978