Yuan Zhang, HuaChun Cai, Ying Lin, Jing Xiao, Jun Zhang. An Ant Colony System Algorithm for the Multicast Routing Problem. In Jingsheng Lei, Jingtao Yao, Qingfu Zhang, editors, Third International Conference on Natural Computation, ICNC 2007, Haikou, Hainan, China, 24-27 August 2007, Volume 4. pages 756-760, IEEE, 2007. [doi]