Keller, H. U. Department Planets and Comets, Max Planck Institute for Solar System Research, Max Planck Society; MPI for Aeronomy, Max Planck Institute for Solar System Research, Max Planck Society;
Russell, C. T., Capaccioni, F., Coradini, A., De Sanctis, M. C., Feldmann, W. C., Jaumann, R., et al. (2007). Dawn Mission to Vesta and Ceres - Symbiosis between Terrestrial Observations and Robotic Exploration. Earth, Moon and Planets, 101, 65-91. doi:10.1007/s11038-007-9151-9.