Marco Benedetti Arnaud Lallouet Jérémie Vautard QCSP Made Practical by Virtue of Restricted Quantification. 38-43 2007 conf/ijcai/2007 IJCAI http://dli.iiit.ac.in/ijcai/IJCAI-2007/PDF/IJCAI07-004.pdf db/conf/ijcai/ijcai2007.html#BenedettiLV07