Nalbach, H-O Max Planck Institute for Biological Cybernetics, Max Planck Society; Former Department Comparative Neurobiology, Max Planck Institute for Biological Cybernetics, Max Planck Society;
https://link.springer.com/content/pdf/10.1007%2FBF00230380.pdf (Publisher version)
Nalbach, H.-O. (1992). Translational head movements of pigeons in response to a rotating pattern: characteristics and tool to analyse mechanisms underlying detection of rotational and translational optical flow. Experimental Brain Research, 92(1), 27-38. doi:10.1007/BF00230380.