STATUS OF VOLUME D OF THE INTERNATIONAL TABLES OF CRYSTALLOGRAPHY, PHYSICAL PROPERTIES OF CRYSTALS. A. Authier, Universite P. et M. Curie, Paris, France.

Volume D consists of three parts:

* Part 1 is devoted to Tensorial Aspects of Physical Properties: mathematical introduction and reduction of polar and axial tensors according to crystal symmetry, group theory and representations, mechanical properties including non-linear elasticity, thermal expansion, dielectric properties, magnetic properties, classical and non-linear optical properties, transport properties, anisotropic displacement parameters, tensors for quasiperiodic systems.

* Part 2 is devoted to Symmetry Aspects of Excitations (phonons, electrons, Raman scattering, Brillouin scattering).

* Part 3 is devoted to the Symmetry aspects of Structural Phase Transitions, Twinning and Domain Structures.

Relevant tables will be included in an accompanying diskette or CD ROM.

The preparation of Volume D is progressing regularly. The overall plan of the whole volume is now finalized and authors have been found for all Chapters. About half of the manuscripts have already been submitted.