Wallraff, Hans Georg Verhaltensphysiologie, Seewiesen, Max Planck Institut für Ornithologie, Max Planck Society;
Wallraff, H. G. (1981). The olfactory component of pigeon navigation: Steps of analysis. Journal of Comparative Physiology A-Neuroethology Sensory Neural and Behavioral Physiology, 143(4), 411-422. doi:10.1007/BF00609907.