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%2FBF00250538.pdf (Verlagsversion)
Poggio, T. (1975). A Theory of Nonlinear Interactions in Multi-inputs (nervous) Systems. Experimental Brain Research, 23(2 Supplement): 321, pp. 163. doi:10.1007/BF00250538.