1. Association of Sleep Disorders Centers. Diagnostic classification of sleep and arousal disorders. Sleep Disorders Classification Committee (Roffwarg HP, Chairmen) Sleep 1979; 2:1–137.
2. Diagnostic Classification Steering Committee. The International Classification of Sleep Disorders: Diagnostic and Coding Manual. Rochester, MN: American Sleep Disorders Association, 1990.
3. The International Classification of Sleep Disorders: Diagnostic and Coding Manual, 2nd Edition. American Academy of Sleep Disorders, Westchester, 2005.
4. Kupfer D, Reynolds C. Management of insomnia. N Engl J Med 1997; 336:341–346.
5. Ashton H. Guidelines for the rational use of benzodiazepines. When and what to use. Drugs 1994; 48:25–40.