1. Mitotic rhythm in human epidermis;Cooper;J Invest Dermatol,1939
2. Development of circadian rhythms in infancy;Mills,1974
3. Human circadian rhythms;Conroy,1974
4. Quantitative effects of sleep deprivation;Ax;Am Psychol,1954
5. Loss of sleep;Wilkinson;Proc R Soc Med,1969