1. Model for specification of the vocal-tract area function;Coker;Journal of the Acoustical Society of America,1966
2. Applied Regression Analysis;Draper,1966
3. Physiology of Speech Production;Hardcastle,1976
4. Factor analysis of tongue shapes;Harshman;Journal of the Acoustical Society of America,1977
5. Selection of the best subset of regression variables. Statistical Methods for Digital Computers;Hocking,1977