J. M. Aljaam, A. Jaoua, S. AlHazbi, A. Hasnah, A. Karime, and A. A. Elsaddik, “An Assistive Computerized System with Tangible User Interfaces for Children with Moderate Intellectual and Learning Disabilities”, Int. J. Emerg. Technol. Learn., vol. 6, no. S2, pp. pp. 11–19, May 2011.