Wallraff, Hans Georg Verhaltensphysiologie, Seewiesen, Max Planck Institut für Ornithologie, Max Planck Society;
Wallraff, H. G. (1988). Olfactory deprivation in pigeons: Examination of methods applied in homing experiments. Comparative Biochemistry and Physiology A-Molecular & Integrative Physiology, 89(4), 621-629. doi:10.1016/0300-9629(88)90844-4.