Constraining the cometary flux through the asteroid belt during the late heavy bombardment M. Brož, A. Morbidelli, W. F. Bottke, J. Rozehnal, D. Vokrouhlický and D. Nesvorný A&A, 551 (2013) A117 Published online: 05 March 2013 DOI: 10.1051/0004-6361/201219296