1. Patterns of academic achievement among hearing impaired students: 1974 and 1983;Allen,1986
2. Early cognitive development in hearing impaired children;Best;American Annals of the Deaf,1976
3. Symbolic play behaviors of normally-developing deaf toddlers;Day,1989
4. Parallel and divergent patterns in blind and sighted infants;Fraiberg;Psychoanalytic Study of the Child,1968
5. Studies in the ego development of the congenitally blind child;Fraiberg;Psychoanalytic Study of the Child,1964