Millimetre continuum observations of comet C/2009 P1 (Garradd) J. Boissier, D. Bockelée-Morvan, O. Groussin, P. Lamy, N. Biver, J. Crovisier, P. Colom, R. Moreno, L. Jorda and V. Piétu A&A, 557 (2013) A88 Published online: 06 September 2013 DOI: 10.1051/0004-6361/201321372