1. Aschoff, J. (ed.): Handbook of Behavioral Neurobiology, Vol 4, Biological Rhythms. New York-London: Plenum Press 1981
2. Bünning, E.: Die physiologische Uhr. Berlin-Heidelberg: Springer 1977
3. Hastings, J.W., Schweiger, H.-G. (eds.): The Molecular Basis of Circadian Rhythms. Berlin: Dahlem Konferenzen 1976
4. Moore-Ede, M., Sulzman, F.M., Fuller, Ch.A.: The Clocks that Time us. Cambridge, Mass.-London: Harvard Univ. Press 1982
5. Suda, M., Hayaishi, O., Nakagawa, H. (eds.): Biological Rhythms and their Central Mechanism. Amsterdam-New York-Oxford: Elsevier 1979