1. [1] M. Bijankhan, "The phonology of optimality theory", Tehran: Samt, 2005.
2. [2] M. Bijankhan, "Phonetic system of Persian language", Tehran: Samt, 2013.
3. [3] Y. Samareh, "Phonetics of Persian language", Tehran: Academic publishing center, 1999.
4. [4] A. M. Haghshenas, "Phonetic", Tehran: Agah, 2013.
5. [5] G. Deihaim, "An introduction to General Phonetics", Tehran: National university of Iran, 159, 1979.