1. Symbolic expression as a variable distinguishing early infantile autism from childhood schizophrenia;Atlas,1985
2. Pantomimic representation in psychotic children;Cucio;Journal of Autism and Childhood Schizophrenia,1978
3. Images and language;Hermelin,1978
4. Autistic disturbances of affective contact;Kanner;Nervous Child,1943
5. Epidemiology of autistic conditions in young children. 1. Prevalence;Lotter;Social Psychiatry,1966