Co-Extra International Conference 2-5 June 2009 Paris The Co-Extra Decision Support System: A Model-Based Integration of Project Results Marko Bohanec, Yves Bertheau, Carlo Brera, Kristina Gruden, Arne Holst-Jensen, Esther J. Kok, Baptiste Lécroart, Antoine Messéan, Marina Miraglia, Roberta Onori, Theo W. Prins, Louis-Georges Soler, Martin Žnidaršič