Passig, D. (2009).
Improving the sequential time perception of teenagers with mild to moderate mental retardation with 3D Immersive Virtual Reality (IVR). Journal of Educational Computing Research, 40 (3) 263-280.
Lifshitz, H., & Merrick, Y. (2001).
Jewish law and the definition of mental retardation. The status of people with intellectual disability within the Jewish law in relation to the AAMR 1992 Definition of Mental Retardation. Journal of Religion, Disability & Health, 5(1), 39-51.
Lifshitz, H. (2001).
Aging phenomena among people with mental retardation in community residence in Israel. Education and Training in Mental Retardation and Developmental Disabilities, 36(1), 30-41.
Lifshitz, H. (2000).
Conceptualization of age and aging by adolescents, adult and elderly people with mental retardation. Education and Training in Mental Retardation and Developmental Disabilities, 35(4), 374-383.
Lifshitz, H. & Rand, Y. (1999)
Cognitive Modifiability in Adult and Older People with Mental Retardation. Mental Retardation 37(2),125-138
Tzuriel, D., & Klein, P.S. (1985).