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;
Bonev, T., Jockers, K., & Credner, T. (1997). Comet Hale-Bopp: velocity field of ions from Fabry-Pérot imaging. Earth, Moon and Planets, 77, 245-252.