Zhong Yao Jian Liu Yonggui Wang Fusing genetic algorithm and Ant Colony Algorithm to optimize virtual enterprise partner selection problem. 3614-3620 2008 IEEE Congress on Evolutionary Computation http://dx.doi.org/10.1109/CEC.2008.4631287 conf/cec/2008 db/conf/cec/cec2008.html#YaoLW08