@article{Soubiran:2558,
      author        = "Soubiran, C. and  Allende Prieto, C. and  Altmann, M. and 
                       Bragaglia, A. and  Clementini, G. and  Frémat, Y. and 
                       Heiter, U. and  Joliet, E. and  Pancino, E. and 
                       Sartoretti, P. and  Smart, R. and  Thuillot, W.",
      title         = "{Ground-Based Observations for Gaia (GBOG)}",
      year          = "2008",
}