On the neuronal basis of figure-ground discrimination by relative motion in the visual system of the fly. 2: Figure-dectection cells, a new class of visual interneurones
In: Biological Cybernetics, Jg. 52 H. 3, S. 195-209
On the neuronal basis of figure-ground discrimination by relative motion in the visual system of the fly. 3: Possible input circuitries and behavioural significance of the FD-cells
In: Biological Cybernetics, Jg. 52 H. 4, S. 267-280