(1) IRIT - LIIHS,
University of Toulouse III, 31 062 Toulouse, France
(2) Department of COmputing Science,
University of Glasgow, GLASGOW G12 8QQ Scotland
(3) UCL/TELE,
Université catholique de Louvain, Place des Doyens, 1 – B-1348 Louvain-la-Neuve, Belgium
(4) BCHI,
Université catholique de Louvain, Place des Doyens, 1 – B-1348 Louvain-la-Neuve, Belgium
Submitted by E. Dubois, January 07, 2004
Change: 08-Jan-2004 by E. Dubois (included missing paper: paperE2.pdf)
Change: 26-Jan-2004 by E. Dubois (corrected: paperE2.pdf)