1. K. Schulgasser, “Relationship between single-crystal and polycrystal electrical conductivity,” J. Appl. Phys 47, 1880–1886 (1976).
2. G.E. Backus, “Long-wave elastic anistropy produced by horizontal layering,” J. Geophys. Res. 67, 4427–4440 (1962).
3. L. Tartar, “Estimations fines des coefficients homogénéisés,” in Pitman Research Notes in Mathematics, ed. P. Kree, 1985. See also the article in these proceedings.
4. K. Schulgasser, “Bounds on the conductivity of statistically isotropic polycrystals,” J. Phys. C 10, 407–417 (1977).
5. K. Schulgasser, “Sphere assemblage model for polycrystals and symmetric materials,” J. Appl. Phys. 54, 1380–1382 (1982).