1. Abt K (1988) Descriptive data analysis (DDA) in quantitative EEG studies. In: Samson-Dollfus D, Guieu JD, Gotman J, Etevenon P (eds) Statistics and topography in quantitative EEG. Elsevier, Amsterdam, pp 150–160
2. Aigner M, Prause W, Freidl M, Weiss M, Izadi S, Bach M, Saletu B (2007) High prevalence of restless legs syndrome in somatoform pain disorder. Eur Arch Psychiatry Clin Neurosci 257:54–57
3. American Academy of Sleep Medicine (ASDA) (2005) The international classification of sleep disorders, diagnostic and coding manual, 2nd edn, Westchester, IL
4. American Sleep Disorders Association (ASDA) (1992) Report EEG arousal. Scoring rules and examples. Sleep 15(2):173–184
5. American Sleep Disorders Association (ASDA) Diagnostic Classification Steering Committee (1997) The international classification of sleep disorders: diagnostic and coding manual, revised. Rochester, Minn, pp 182–185