Götz, KG Forschungsgruppe Kybernetik, Max-Planck-Institut für Biologie, Max Planck Society;
https://link.springer.com/content/pdf/10.1007/BF00272517.pdf (Publisher version)
Götz, K. (1968). Flight control in Drosophila by visual perception of motion. Kybernetik, 4(6), 199-208. doi:10.1007/BF00272517.