1Flecher S G."Nasalance" vs listner judgements of nasality.J C left Palate,1976;13(1):31-44.
2Daniel R.Boone,Stephen C.McFarlane,Shelley L.Von Berg.The Voice and Voice Therapy.Pearson Education,2005.159-167.
3Huang,Zaoming.Measures of vocal function during change in vocal effort level.Journal of Voice,1994,9(4):429-438.
4K.M.Van Lierde,F.L.Wuyts,De Bodt,P.Van Cauwenberge.Nasometric Values for Normal Nasal Resonance in the Speech of Young Flemish Adults.Cleft Palate Craniofac J.2001,38(2):112-8.
5Awan,SN.Age and gender effects on measures of RMS nasalance.Clinical Linguistics & Phonetics.2001,15(1):117-22.
6Tara L.Whitehill.Nssalance Measures in Cantonese-Speaking Women.Cleft Palate Craniofac J.2001,38(2):119-25.
7[4]Masuda S.Role of the maxillary sinus as a resonant cavity.Nippon Jibinkoka Gakkai Kaiho,1992,95:71-80.
8[5]Hong K H,Kwon S H,Jung S S.The assessment of nasality with a nasometer and sound spectrography in patients with nasal polyposis.Otolaryngol Head Neck Surg,1997,117:343-348.
9[6]Hosemann W,Gode U,Dunker J E,et al.Influence of endoscopic sinus surgery on voice quality.Eur Arch Otorhinolaryngol,1998,255:499-503.
10[7]Soneghet R,Santos R P,Bohlau M,et al.Nasalance changes after functional endoscopic sinus surgery.J Voice,2002,16:392-397.