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;
Kührt, E., Keller, H. U., & Lorenz, E. (1995). Interpretation of surface temperatures and activity of KOSI samples. Planetary and Space Science, 43, 333-340.