Shohruh Begmatov, Mukhriddin Arabboev, Sardor Vakhkhobov, Mokhirjon Rikhsivoev, Khushnud Gaziev, and Khabibullo Nosirov. “Design and Development of a Folding Type Braille Keyboard ”. Central Asian Journal of Theoretical and Applied Science, Vol. 4, no. 9, Sept. 2023, pp. 1-9, https://cajotas.centralasianstudies.org/index.php/CAJOTAS/article/view/1271.