מערכת אימד
- Borbély A. A. (1982) A Two Process Model of Sleep Regulation. Human Neurobiology 1:195-204
- Holst S. C. and Landolt H. P. (2015) Sleep Homeostasis, Metabolism, and Adenosine. Curr Sleep Medicine Rep 1:27–37
- https://www.sleepfoundation.org/articles/melatonin-and-sleep