Decision Support Systems – Collaborative Models and Approaches in Real Environments Euro Working Group Workshops, EWG-DSS 2011, London, UK, June 23-24, 2011, and Paris, France, November 30 - December 1, 2011, Revised Selected and Extended Papers - Hernández, Jorge E.; Zarate, Pascale; Dargam, Fátima; Delibašić, Boris; Liu, Shaofeng; Ribeiro, Rita (Springer Berlin Heidelberg : Imprint: Springer, 2012)