1. J. A. Wheeler, “Physics and Austerity: Law Without Law,” A Working Paper, The University of Texas, (1982), pp. 61–83; published in Chinese as “Physics and Austerity,” Anhui, Science and Technology Publication, China August 1982.
2. J. A. Wheeler, “Particles and Geometry,” inUnified Theories of Elementary Particles, P. Breithenlohner and H. Durr, eds. (Springer-Verlag, New York, 1982), pp. 189–217.
3. C. W. Misner, K. S. Thorne, and J. A. Wheeler, “Bianchi Identities and the Boundary of a Boundary Is Zero,” inGravitation (W. H. Freeman, San Francisco, 1973), Chap. 16.
4. É. Cartan, 1928 and 1946,Leçons sur la Géométrie des Espaces de Riemann (Gauthier-Villars, Paris, France); English translation by Robert Hermann (Mathematical Sciences Press, Brookline, Massachusetts, 1983), Chap. 8.
5. W. A. Miller and J. A. Wheeler, “4-Geodesy,” paper presented at the Congress “Galactic and Extragalactic Dark Matter,” Rome, 28–30 June 1983; to appear inNuovo Cimento (1985).