1. Syntactic Structures (Chap. 7);Chomsky,1957
2. Negation: a linguistic variable;Eifermann;Acta Psychologica,1960
3. The significance of psychological research in schizophrenia;Goldstein;Journal of Nervous and Mental Diseases,1943
4. Methodological approach to the study of schizophrenic thought disorder;Goldstein,1964
5. A Textbook of Psychiatry;Henderson,1951