Xiaomin Hu Jun Zhang Li-Ming Zhang Swarm Intelligence Inspired Multicast Routing: An Ant Colony Optimization Approach. 51-60 2009 EvoWorkshops http://dx.doi.org/10.1007/978-3-642-01129-0_6 conf/evoW/2009 db/conf/evoW/evoW2009.html#HuZZ09