1-Khoramshi H,Mohammadalipour F.[Comparing mean of fundamental frequency between male and female student in ahvaz jundishapour university of medical science].[In Persian]
2-Murry M. The singer's voice. San Diago: Plural publishing; 2008.
3-Natour YS, Wingate JM. Fundamental Frequency Characteristics of Jordanian Arabic Speakers. J Voice 2009;23(5):560-6.
4-Cheang HS, Pell MD. Acoustic markers of sarcasm in Cantonese and English. J Acoust Soc Am 2009;126(3):1394-405.
5-Ting HN,
Chia SY,
Abdul Hamid B,
Mukari SZ.. Acoustic characteristics of vowels by normal Malaysian Malay young adults. J voice 2011;25(6): e305-9.
6-Ting HN,
Chia SY,
Kim KS,
Sim SL,
Abdul Hamid B. Vocal fundamental frequency and perturbation measurements of vowels by normal Malaysian Chinese adults. J voice 2011;25(6):e311-7.
7-Chen SH. The effects of tones on speaking frequency and intensity ranges in Mandarin and Min dialects. J Acoust Soc Am 2005;117(5):3225-30.
8-Nakamura H, Gilbert H, Robb M. A comparative study of vocal fundamental frequency in the speech of Japanese and American hearing-impaired children. Logoped Phoniatr Vocol 2007;32(1):17-22.
9-Altenberg EP, Ferrand CT. Fundamental frequency in monolingual English, bilingual English/Russian, and bilingual English/Cantonese young adult women. J voice 2006;20(1):89-96.
10-Bernthal JE, Bankson NW, Flipsen P Jr. Articulation and phonological disorders: speech sound disorders in children. 6th ed. Boston: Pearson/ Allyn Bacon; 2009.
11-Amir O, Wolf M, Amir M. A clinical comparison between two acoustic analysis softwares: MDVP and Praat. Biomedical Signal Processing and Control 2009; 4(3): 202-5.
)