Hartogh, P. MPI for Aeronomy, Max Planck Institute for Solar System Research, Max Planck Society; Department Planets and Comets, Max Planck Institute for Solar System Research, Max Planck Society;
Link (Any fulltext)
Biver, N., Bockelée-Morvan, D., Moreno, R., Crovisier, J., Hartogh, P., de Val-Borro, M., et al.(2012). Comet C/2011 L4 (Panstarrs). Central Bureau Electronic Telegrams 3230, 1.