1. Some spectral features of ‘normal’ and simulated ‘rough’ vowels;Emanuel;Folia Phoniatrica,1969
2. Roughness and temporal masking patterns of sinusoidally amplitude modulated broad-band noise;Fastl,1977
3. Perceptual and acoustic correlates of abnormal voice qualities;Hammarberg;Acta Otolaryngologica,1980
4. Clinical routines for the perceptual–acoustic assessment of dysphonia;Hammarberg,1985
5. Clinical examination of voice;Hirano,1979