%0 Journal Article %T A Novel Bat Algorithm Based on Differential Operator and L¨¦vy Flights Trajectory %A Jian Xie %A Yongquan Zhou %A Huan Chen %J Computational Intelligence and Neuroscience %D 2013 %I Hindawi Publishing Corporation %R 10.1155/2013/453812 %U http://dx.doi.org/10.1155/2013/453812