1. Amari, S. (1981).International Journal of Engineering Science,19, 1581.
2. Cartan, �. (1922).Comptes Rendus de l'Academie des Sciences (Paris),174, 593.
3. Cartan, �. (1986).On Manifolds with an Affine Connection and Theory of General Relativity, Bibliopolis, Naples, Italy.
4. G�nther, H., and Zorawski, M. (1985).Annalen der Physik,42, 41.
5. G�nther, H., and Zorawski, M. (unpublished). On continuum theory of point defects and dislocations, unpublished manuscript.