Serveur de Thèses du CCSD-CNRS CCSD metadata are freely accessible to all, under the following conditions: (1) The full name of the author and (2) the full bibliographic reference information for the thesis must always co-appear prominently with any redisplay of the metadata, in any medium. The metadata may not be offered for sale. CCSD full-text thesis are freely accessible to all under the following conditions: (1) The full name of the author and (2) the full bibliographic reference information for the thesis must always co-appear prominently with redisplay of the text, in any medium. The text may not be offered for sale. Submissions are made by Faculty and EPST members. System is EPrints Version 1.1.1 (23/01/2001) with french language (http://www.eprints.org/)