Dhananjay R. Thiruvady Christian Blum Bernd Meyer Andreas T. Ernst Hybridizing Beam-ACO with Constraint Programming for Single Machine Job Scheduling. 30-44 2009 Hybrid Metaheuristics http://dx.doi.org/10.1007/978-3-642-04918-7_3 conf/hm/2009 db/conf/hm/hm2009.html#ThiruvadyBME09