Kurk, J., Cimatti, A., Daddi, E., Mignoli, M., Pozzetti, L., Dickinson, M., et al. (2013). GMASS ultradeep spectroscopy of galaxies at z ~ 2 - VII. Sample selection and spectroscopy. Astronomy & Astrophysics, 549: A63, pp. 1-43. doi:10.1051/0004-6361/201117847.