[8] Consultrans (lid van het ECORYS Lead Framework Contract-consortium), "Study in view of the preparation of the 5th periodical report on the implementation of Regulation No 3577/92.
[8] Consultrans (Mitglied von ECORYS, dem federführenden Konsortium des Rahmenvertrags), „Study in view of the preparation of the 5th periodical report on the implementation of Regulation No 3577/92.