Min Xie Lixin Gao Haiwa Guan Ant Algorithm Applied in the Minimal Cost Maximum Flow Problem. 201-208 2008 ICIC (2) http://dx.doi.org/10.1007/978-3-540-85984-0_25 conf/icic/2008-2 db/conf/icic/icic2008-2.html#XieGG08