1. Circadian rhythm of responsiveness in the visual system of the crayfish;Aréchiga,1973
2. Freerunning and entrained circadian rhythms;Aschoff,1981
3. Daily variations of immunoreactive melatonin in the visual system of crayfish;Balzer;Biol. Cell,1997
4. Organization of circadian functions: interaction with the body;Buijs;Prog. Brain Res.,2006
5. A circadian rhythm in neural activity can be recorded from the central nervous system of the cockroach;Colwell;Journ. Comp. Physiol. A, (Neuroethol. Sensory Neural Behav. Physiol.),1990