1. A growing edge of measurement of feelings;Aitken;Proceedings of the Royal Society of Medicine 1969,1969
2. Why I like to read — statistical analysis of questionnaire data;Allerup,1985
3. Statistical analysis of MADRS — a rating scale;Allerup,1986
4. Diagnostic and statistical manual of mental disorders (DSM-III);American Psychiatric Association,1980
5. Conditional inferences and models for measuring;Andersen,1973