Linear and nonlinear mechanisms of motion selectivity in single neurons of the cat's visual cortex. - Robert C. Emerson; Mark C. Citron (SMC, 1989)

Identification of complex-cell intensive nonlinearities in a cascade model of cat visual cortex. - Robert C. Emerson; Michael J. Korenberg; Mark C. Citron (Biol. Cybern., 1992)