1. Syntactic Structures;Chomsky,1957
2. Structural Stability and Morphogenesis;Thom,1972
3. Go¨del, Escher, Bach: An Eternal Golden Braid;Hofstadter,1979
4. Self-Modifying Systems in Biology and Cognitive Science—A new Framework for Dynamics, Information and Complexity;Kampis,1991
5. On measuring the complexity of natural speech processes;Schapiro;Paper presented at the Zeinisjoch Meeting on Measurement and Fractals,1990