Abderrahmane Badis, “Development of an Optimized Keyboard for the Tamazight Language: Integration of the Letter Frequency Model for Improved Ergonomics and Efficiency”, IJC, vol. 50, no. 1, pp. 117–131, Apr. 2024, Accessed: Oct. 04, 2025. [Online]. Available: https://ijcjournal.org/InternationalJournalOfComputer/article/view/2204