1. Carpentier, G.A., Grossberg, S.: Neural Networks for Vision and Image Processing. MIT Press, Cambridge (1992)
2. Cowan, J.D., Ermentrout, G.B.: A mathematical theory of visual hallucination patterns. Biol. Cybern. 34, 137–150 (1979)
3. Hawking, S., Penrose, R.: The Nature of Space and Time. Princeton University Press, Princeton (1996)
4. Horwich, P.: Asymmetries in Time. MIT Press, Cambridge (1987)
5. Isham, Ch.: Quantum gravity. In: Davies, P. (ed.) The New Physics, pp. 70–93. Cambridge University Press, Cambridge (1993)