(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)