1. NORMAL FORMS OF FUNCTIONS IN NEIGHBOURHOODS OF DEGENERATE CRITICAL POINTS
2. Special bifurcations of the double cusp. Proceedings of the London Mathematical Society, 1982.
3. Bifurcation geometry of E6
4. A draft article for Scientific American. In Catastrophe theory: Selected papers (1972–1977). Reading, Massachusetts: Addison-Wesley, 1977.
5. A catastrophe theory of anorexia nervosa. In (Ed.), Hunger models. New York: Academic Press, 1978.