Amir Fattahi, R., Shykhzadh Najjar, H., Abdi, S., & Seyed Salehi, S. A. (2003). Feedback effect of changes in frequency hearing Brnhvhy main Persian-speaking adults with hearing defects, the multi-channel cochlear implants. Sharif Journal of Industrial Engineering & Management, Vol.19(No. 25), 110-119.

Amir Fattahi, R., Shykhzadh Najjar, H., Abdi, S., & Seyed Salehi, S. A. "Feedback effect of changes in frequency hearing Brnhvhy main Persian-speaking adults with hearing defects, the multi-channel cochlear implants", Sharif Journal of Industrial Engineering & Management, Vol.19, No. 25, 2003, 110-119.

Amir Fattahi R., Shykhzadh Najjar H., Abdi S., Seyed Salehi S. A. (2003). 'Feedback effect of changes in frequency hearing Brnhvhy main Persian-speaking adults with hearing defects, the multi-channel cochlear implants', Sharif Journal of Industrial Engineering & Management, Vol.19(No. 25), pp. 110-119.

R. Amir Fattahi, H. Shykhzadh Najjar, S. Abdi & S. A. Seyed Salehi, "Feedback effect of changes in frequency hearing Brnhvhy main Persian-speaking adults with hearing defects, the multi-channel cochlear implants," Sharif Journal of Industrial Engineering & Management, Vol.19 No. 25 (2003): 110-119,

Amir Fattahi R., Shykhzadh Najjar H., Abdi S., Seyed Salehi S. A. Feedback effect of changes in frequency hearing Brnhvhy main Persian-speaking adults with hearing defects, the multi-channel cochlear implants. SJIE. 2003;Vol.19(No. 25):110-119 (In Persian).