A study of Cybele asteroids - II. Spectral properties of Cybele asteroids C.-I. Lagerkvist, L. Moroz, A. Nathues, A. Erikson, F. Lahulla, O. Karlsson and M. Dahlgren A&A, 432 1 (2005) 349-354 Published online: 22 February 2005 DOI: 10.1051/0004-6361:20041152