Braitenberg, V Former Department Structure and Function of Natural Nerve-Net, Max Planck Institute for Biological Cybernetics, Max Planck Society; Max Planck Institute for Biological Cybernetics, Max Planck Society;
https://link.springer.com/content/pdf/10.1007%2FBF00233996.pdf (Publisher version)
Braitenberg, V. (1972). Patterns of projection in the visual system of the fly II. Quantitative aspects of second order neurons in relation to models of movement perception. Experimental Brain Research, 16(2), 184-209. doi:10.1007/BF00233996.