Arabboev, M. ., S. . Begmatov, Z. . Rakhimov, K. . Gaziev, and K. . Nosirov. “Design of an External USB Braille Keyboard for Computers”. Central Asian Journal of Theoretical and Applied Science, vol. 3, no. 11, Nov. 2022, pp. 145-50, https://www.cajotas.casjournal.org/index.php/CAJOTAS/article/view/1003.