1. Differential diagnosis of hoarseness;Isshiki;Folia Phoniatrica,1969
2. Synthesis of voiced sounds from a two-mass model of the vocal cords;Ishizaka;Bell Syst Tech J,1972
3. Voice research and clinical needs;Hammarberg;Folia Phon Log,2000
4. The Phonetic Description of Voice Quality;Laver,1981
5. Hammarberg B. Perceptual and acoustic analysis of dysphonia. Ph.D. thesis. Department of Logopedics and Phoniatrics, Karolinska Institute, Stockholm, Sweden, 1986.