1. K. Al-Fityani and C. Padden, “Sign language geography in the Arab world,” Sign Lang. A Cambridge Surv., pp. 433–450, 2010.
2. “LAS: First part of the Unified Arabic Sign Dictionary,” Leag. Arab States Arab Leag. Educ. Cult. Sci. Organ. Tunis., 2000.
3. A. addin I. Sidig, H. Luqman, and S. A. Mahmoud, “Arabic Sign Language Recognition Using Optical Flow-Based Features and HMM,” in Recent Trends in Information and Communication Technology: Proceedings of the 2nd International Conference of Reliable Information and Communication Technology (IRICT 2017), F. Saeed, N. Gazem, S. Patnaik, A. S. Saed Balaid, and F. Mohammed, Eds. Cham: Springer International Publishing, pp. 297–305, 2018.
4. S. Semreen, M. Albinali, The rules of Arab Qatari sign standardized language, Supreme Council of Family Affairs, 2010.
5. M. F. Tolba and A. S. Elons, “Recent developments in sign language recognition systems,” in Computer Engineering & Systems (ICCES), 2013 8th International Conference on, pp. xxxvi--xlii, 2013.