Relaxation therapy for insomnia: nighttime and day time effects

A New Method for Measuring Daytime Sleepiness: The Epworth Sleepiness Scale

Murray W. Johns · SLEEP · 1991 · 17.2K citations · Full text

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The Fatigue Severity Scale

Lauren Krupp · Archives of Neurology · 1989 · 6K citations

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Development and validation of the penn state worry questionnaire

Thomas Meyer, Mark L. Miller, R. Metzger et al. · Behaviour Research and Therapy · 1990 · 5.1K citations

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The International Classification of Sleep Disorders

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Epidemiologic study of sleep disturbances and psychiatric disorders. An opportunity for prevention?

Daniel E. Ford · JAMA · 1989 · 2.5K citations

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