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;
Kiselev, N. N., Rosenbush, V. K., & Jockers, K. (1999). Polarimetry of asteroid 2100 Ra-Shalom. A comparison of polarization-phase dependences for C- and S-type asteroids and comets. Astron. Vestnik, 33(3), 222-230.