1. S. M. Kozlov. Geometrical aspects of homogenization. Uspekhi Mat. Nauk, 2 (1989), 79?120 (in Russian, English translation available).
2. J. M. Dewey. The elastic constants of materials loaded with non rigid fillers. J. Appl. Phys., 13 (1947), 378?382.
3. V. P. Kotlyarov & E. Ja. Khruslov. On equations of elastic medium with a great number of fine absolutely hard inclusions. J. Math. Phys. Funct. Anal., 3 (1972), 39?51 (in Russian).
4. Z. Hashin & S. Strikman. A variational approach to the theory of elastic behaviour of multiphase materials. J. Mech. Phys. Solids, 10 (1963), 127?140.
5. J. B. Keller. A theorem on the conductivity of a composite medium. J. Math. Phys., 5 (1964), 548.