[1] M. A. Arbib:
Automata Theory and Control Theory - A Rapprochement. Automatica 5 (1966), 161-189.
Zbl 0141.28402
[3] E. C. Zeeman:
The Topology of the Brain and Visual Perception. In: The Topology of 3-Manifolds. Ed. by M. K. Fort, pp. 240-256.
MR 0140374