1. Ralph H. Abraham, Complex dynamical systems, Mathematical Modelling in Science and Technology, eds. X.J.R. Avula, R.E. Kalman, A.I. Leapis, and E.Y. Rodin, Pergamon Elmsford, NY, pp. 82–86. 1984
2. Ralph H. Abraham, Cellular dynamical systems, Mathematics and Computers in Biomedical Applications, Proc. IMACS World Congress, Oslo, 1985, eds. J. Eisen-feld and C. DeLisi, North-Holland, Amsterdam, pp. 7–8. 1986
3. Ralph H. Abraham, Cuspoidal nets, Toward a Just Society for Future Generations, eds. B.A. and B.H. Banothy, Int’l Society for the Systems Sciences, pp. 66–683. 1990a
4. Ralph H. Abraham, Visualization techniques for cellular dynamata, Introduction of Nonlinear Physics, ed. Lui Lam, Springer-Verlag, Berlin. 1990b
5. Ralph H. Abraham, Gottfried Mayer-Kress, Alexander Keith, and Matthew Koebbe, Double cusp models, public opinion, and international security, Int. J. Bifurcations Chaos
1(2), 417–430. 1991a