Wallraff, Hans Georg Verhaltensphysiologie, Seewiesen, Max Planck Institut für Ornithologie, Max Planck Society;
Wallraff, H. G. (1994). Initial orientation of homing pigeons as affected by the surrounding landscape. Ethology, Ecology & Evolution, 6(1), 23-36. doi:10.1080/08927014.1994.9523005.