Braitenberg, V Former Department Structure and Function of Natural Nerve-Net, Max Planck Institute for Biological Cybernetics, Max Planck Society;
Braitenberg, V. (1974). A regular net of reciprocal synapses in the visual system of the fly, Musca domestica. Journal of Comparative Physiology, 90(1), 25-31. doi:10.1007/BF00698364.