Documentation: CES/2003/3 and addenda 1-8, CES/2003/6, CES/2003/19, CES/2003/18 and Add.1, Working Paper 3 and Working Paper 4
Documentation: CES/2003/3 et Add.1 à 8; CES/2003/6, CES/2003/19, CES/2003/18 et Add.1; documents de travail 3 et 4.