@article{Mierla:925,
      author        = "Mierla, M. and Besliu-Ionescu, D. and Chiricuta, O. and
                       Oprea, C. and Maris, G.",
      title         = "{Studies of Coronal Mass Ejections that Have Produced
                       Major Geomagnetic Storms}",
      year          = "2012",
}