1. The physiological clock;Büning,1973
2. The clocks that time us;Moore-Ede,1982
3. Chronobiological aspects of primate research;Erkert,2003
4. Exogenous and endogenous components in circadian rhythms;Aschoff;Cold Spring Harbor Symp. Quant. Biol.,1960
5. Zeitgebers, entrainment, and masking: some unsettled questions;Aschoff,1982