1. Oral findings of mentally retarded children;Gullikson;J Dent Child,1969
2. Dental infection and mental health;Ellis;Oral Health,1943
3. Dental problems of non-institutionalized mentally retarded children;Snyder;Northwest Dent,1960
4. Epidemiologic studies in dental caries; incidence of caries among institutionalized children;Boyd;J Pediatr,1947
5. Oral conditions of the mentally retarded patient;Tannenbaum;J Dent Child,1960