@article{ZaourarHamoudiHolschneideretal.2013,
  author    = {Naima Zaourar and Mohamed Hamoudi and Matthias Holschneider and Mioara Mandea},
  title     = {Fractal dynamics of geomagnetic storms},
  journal   = {Arabian journal of geosciences},
  volume    = {6},
  number    = {6},
  pages     = {1693 -- 1702},
  doi       = {10.1007/s12517-011-0487-0},
  year      = {2013},
}