Ryszard Tadeusiewicz Arkadiusz Lewicki The Ant Colony Optimization Algorithm for Multiobjective Optimization Non-compensation Model Problem Staff Selection. 44-53 2010 ISICA (1) http://dx.doi.org/10.1007/978-3-642-16493-4_5 conf/isica/2010 db/conf/isica/isica2010.html#TadeusiewiczL10