1. The difference between the haptic perception of sighted and blind persons;Ahmad;Research Bulletin, American Foundation for the Blind,1971
2. Evaluation of the binaural sensory aid;Airasian;Research Bulletin, American Foundation for the Blind,1973
3. Effects of early blindness;Axelrod,1959
4. Severe visual handicap and kinesthetic figural aftereffects;Axelrod;Perceptual and Motor Skills,1961
5. Ayres, A. F. A comparison of selected perception among early blinded and sighted adolescents. Unpublished doctoral dissertation, Rutgers Univ., 1966.