F. Rashno Seydari and  M. Nikafrooz,  Needs Analysis Survey of Hearing Impaired Students’ Teachers in Elementary Schools for Designing Curriculum Plans and Improving Human Resources.   journal   = {International Journal of Educational and Pedagogical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    October 2020, vol. 167(11). 1068 - 1074
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/10011555.