Jockers, K. 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;
Kulyk, I., Jockers, K., Karpov, N., & Sergeev, A. (2002). Astrometric CCD observations of the inner Jovian satellites in 1999-2000. Astronomy and Astrophysics, 383, 724-728.