1. DOLPHIN team, INRIA Lille - Nord Europe; Parc scientifique de la Haute Borne; 40 av. Halley, Bât A, Park Plaza 59650 Villeneuve d'Ascq France
2. Swiss Federal Archives; Archivstrasse 24 3003 Berne Switzerland
3. Department of Information Technology and Electrical Engineering; Swiss Federal Institute of Technology (ETH) Zurich; Zurich Switzerland
4. Institute for Continuing Professional Education; University of Teacher Education PHBern; Bern Switzerland