Additional spectra of asteroid 1996 FG3, backup target of the ESA MarcoPolo-R missionJ. de León, V. Lorenzi, V. Alí-Lagoa, J. Licandro, N. Pinilla-Alonso and H. CampinsA&A, 556 (2013) A33DOI: https://doi.org/10.1051/0004-6361/201321514