@ARTICLE{
       Author = {Gallos, L. and Havlin, S. and Kitsak, M. and Liljeros, F. and Makse, H. and Muchnik, L. and Stanley, H.}, 
       Title = {{Identification of influential spreaders in complex networks}},
       Journal = {Nature Physics}, 
       Volume = {6},
       Number = {11},
       Pages = {888-893},
       Month = {Aug},
       Year = {2010},
       Keywords = {routing   topology}
}