@article{CSIS_2012_9_4_a9,
     author = {Ping Guo and Zhujin Liu},
     title = {An {Ant} {System} based on {Moderate} {Search} for {TSP}},
     journal = {Computer Science and Information Systems},
     publisher = {mathdoc},
     volume = {9},
     number = {4},
     year = {2012},
     url = {http://geodesic.mathdoc.fr/item/CSIS_2012_9_4_a9/}
}