@article{Brajsa:287,
      author        = "Brajsa, R. and Woehl, H. and Ruzdjak, D. and Vrsnak, B.
                       and Verbanac, G. and Svalgaard, L. and Hochedez, J.-F.",
      title         = "{On the solar rotation and activity}",
      year          = "2007",
}