Conference Paper
Berthold, P.: Concept of endogenous control of migration in warblers. In: Animal Migration, Navigation, and Homing, pp. 275 - 282 (Eds. Schmidt-Koenig, K.; Keeton, W. T.). Animal Migration, Navigation, and Homing, Tübingen, August 17, 1977 - August 20, 1977. Springer, Berlin, Heidelberg, New York (1978)