1. History of polysomnography;Deak;Sleep Med Clin,2009
2. History of sleep medicine;Dement;Sleep Med Clin,2008
3. Adams CD. The Genuine Works of Hippocrates. 1868. Available at: https://archive.org/stream/genuineworksofhi01hippuoft/genuineworksofhi01hippuoft_djvu.txt. Accessed May 25, 2016.
4. Aristotle. On Sleep and Sleepiness. 350 B.C. Available at: http://classics.mit.edu/Aristotle/sleep.html. Accessed May 25, 2016.
5. Sleep apnea. From the needles of Dionysius to continuous positive airway pressure;Kryger;Arch Intern Med,1983