[DBLP:conf/cpaior/HebrardOO10]
    
    
    
    
    
        Constraint Programming and Combinatorial Optimisation in Numberjack
    
    
    
    Integration of AI and OR Techniques in Constraint Programming for Combinatorial Optimization Problems, 7th International Conference, CPAIOR 2010, 181-185, 
    
        
        2010