@article{ArenasBorgeHolthoeferGomezetal.2010,
  author    = {Alexandre Arenas and Javier Borge-Holthoefer and Sergio Gomez and Gorka Zamora-Lopez},
  title     = {Optimal map of the modular structure of complex networks},
  doi       = {10.1088/1367-2630/12/5/053009},
  url       = {http://iopscience.iop.org/1367-2630},
  year      = {2010},
}