Recent Advances in Constraints 11th Annual ERCIM International Workshop on Constraint Solving and Contraint Logic Programming, CSCLP 2006, Caparica, Portugal, June 26-28, 2006, Revised Selected and Invited Papers - Azevedo, Francisco; Barahona, Pedro; Fages, François; Rossi, Francesca (Springer Berlin Heidelberg, 2007)