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2. Diagnostic Classification of Sleep and Arousal Disorders;Association of Sleep Disorders Centers;Sleep,1979
3. Reported vs. recorded sleep characteristics;Baekeland;Archives of General Psychiatry,1971
4. Psychological variables in the diagnosis of insomnia;Beutler,1978
5. Prevalence of sleep disorders in the Los Angeles Metropolitan area;Bixler;American Journal of Psychiatry,1979