Poggio, T Former Department Information Processing in Insects, 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/BF02281970.pdf (Publisher version)
Poggio, T. (1975). On optimal nonlinear associative recall. Biological Cybernetics, 19(3), 201-209. doi:10.1007/BF02281970.