Sigal Asaf Haggai Eran Yossi Richter Daniel P. Connors Donna L. Gresh Julio Ortega Michael J. Mcinnis Applying Constraint Programming to Identification and Assignment of Service Professionals. 24-37 2010 CP https://doi.org/10.1007/978-3-642-15396-9_5 conf/cp/2010 db/conf/cp/cp2010.html#AsafERCGOM10