Nucleus of the active Centaur C/2011 P2 (PANSTARRS)E. Mazzotta Epifani, D. Perna, E. Dotto, P. Palumbo, M. Dall’Ora, M. Micheli, S. Ieva and E. PerozziA&A, 597 (2017) A59DOI: https://doi.org/10.1051/0004-6361/201628405
