@article{Mierla:3215,
      author        = "Mierla, M. and Oprea, C. and Srivastava, N. and Rodriguez,
                       L. and Besliu-Ionescu, D. and Stere, O. and Maris-Muntean,
                       G.",
      title         = "{Empirical model for predicting the occurrence of major
                       geomagnetic storms during sc23}",
      month         = "Oct",
      year          = "2012",
}