• Semmelweis Universty, Institute of Behavioural Sciences

• Semmelweis University, Budapest

• Epilepsy Center, National Institute of Psychiatry and Neurology, Budapest

• Eötvös Lóránd University, Department of Physiology and Neurobiology

• Thalamo Cortical Mechanisms: Crunelli Research Group

• The cognitive neuroscience of waking, sleeping and deaming. Laboratory of Neurophysiology, Massachusetts Mental Health Center

• Sleep Scoring Manual

• Sleep, Dreams and Wakefulness

• The Quantitative study of dreams, University of California, Santa Cruz

• Klinische Forschergrouppe Neuroendokrinologie

• Center For Sleep Research, Siegel Lab

• University Zurich, Section of Psychopharmacology and Sleep Research

• Sleep Disorders Glossary

• Basic of Sleep Behaviour, Syllabus

• Sleep Home Pages

• PubMed

• Scirus