1. Adler, J.A. and W.W. Tso (1974). Decision-making in bacteria: Chemotactic response of E. coli to conflicting stimuli. Science 184, 1292–1294.
2. Albus, J . (1979). A model of the brain for robot control. Byte 4(9), 130 – 148.
3. Dewdney, A.K . (1979). J. Recreational Math. 12, 16.
4. Garey, M. and D. Johnson (1980). Computers and Intractability.New York-San Francisco: Freeman.
5. Harth, E . (1983). A neural sketch-pad. These Proceedings.