Comet 67P/Churyumov-Gerasimenko rotation changes derived from sublimation-induced torques T. Kramer, M. Läuter, S. Hviid, L. Jorda, H. U. Keller and E. Kührt A&A, 630 (2019) A3 Published online: 20 September 2019 DOI: 10.1051/0004-6361/201834349