RechtschaffenA., RechtschaffenA., & KalesA. (Eds.) A manual of standardized terminology, techniques and scoring systems for sleep stages of human subjects. Washington, D. C.: U. S. Gov't Print. Off., 1968.
3.
TaubJ. M., & BergerR. J.Extended sleep and performance: the Rip Van Winkle effect. Psychon. Sci., 1969, 16, 204–205.
4.
VerdoneP.Sleep satiation: extended sleep in normal subjects. EEG clin. Neurophysiol., 1968, 24, 417–423.
5.
WebbW. B., & AgnewH. W.Sleep stage characteristics of long and short sleepers. Science, 1970, 168, 146–147.