@article{WuLiChenetal.2009,
  author    = {Ye Wu and Ping Li and Maoyin Chen and Jinghua Xiao and J{\"u}rgen Kurths},
  title     = {Response of scale-free networks with community structure to external stimuli},
  doi       = {10.1016/j.physa.2009.03.037},
  url       = {http://www.sciencedirect.com/science/journal/03784371},
  year      = {2009},
}