Circadian temperature and melatonin rhythms, sleep, and neurobehavioral function in humans living on a 20-h day.
Wyatt JK, Ritz-De Cecco A, Czeisler CA, Dijk DJ. Circadian temperature and melatonin rhythms, sleep, and neurobehavioral function in humans living on a 20-h day. Am J Physiol. 1999 Oct; 277(4 Pt 2):R1152-63.