author        = "Damiani, F. and Prisinzano, L. and Micela, G. and Randich,
                       S. and Gilmore, G. and Drew, J. E. and Jeffries, R. D. and
                       Frémat, Y. and Alfaro, E. J. and Bensby, T. and Bragaglia,
                       A. and Flaccomio, E. and Lanzafame, A. C. and Pancino, E.
                       and Recio-Blanco, A. and Sacco, G. G. and Smiljanic, R. and
                       Jackson, R. J. and de Laverny, P. and Morbidelli, L. and
                       Worley, C. C. and Hourihane, A. and Costado, M. T. and
                       Jofré, P. and Lind, K. and Maiorca, E.",
      title         = "{Gaia-ESO Survey: Empirical classification of VLT/Giraffe
                       stellar spectra in the wavelength range 6440-6810 Å in the
                       γ Velorum cluster, and calibration of spectral indices}",
      year          = "2014",