1. A physical definition of “good voice quality” in the male voice;Bartholomew;J Acoustical Soc Am,1934
2. Certain results of the analysis of a singer's voice;Rzhevkin;Sov Physics Acoust,1956
3. Formant structure and articulation of spoken and sung vowels;Sundberg;Folia Phoniatr,1970
4. An articulatory interpretation of the “singing formant”;Sundberg;Speech Trans Lab Q Prog Status Rep,1972
5. Acoustic interaction between the glottal source and the vocal tract;Rothenberg,1981