7. Description of document versions

Version Aster	Author (s) Organization (s)	Description of changes
10.2	R. BARGELLINI, J.M. PROIX R&D/ AMA J. COLOIGNER Univ. Rennes	Initial text
10.4	R. BARGELLINI, J.M. PROIX R&D/ AMA	Addition of the description of the algorithm using the Lie derivative, of the calculation of the tangent operator, and of the algorithm GDEF_LOG
13.1	Mr. Abbas	Deleting GDEF_HYPO_ELAS