David K. Randall, «Rethinking Sleep,» The New York Times, September 22, 2012, .
770
«Napping Reverses Health Effects of Poor Sleep», Endocrine Society press society, February 10, 2013, .
771
Ryan Brindle and Sarah Conklin, «Daytime Sleep Accelerates Cardiovascular Recovery after Psychological Stress,» International Journal of Behavioral Medicine 19 (2012): 111–14.