Impact induced surface heating by planetesimals on early MarsT. I. Maindl, R. Dvorak, H. Lammer, M. Güdel, C. Schäfer, R. Speith, P. Odert, N. V. Erkaev, K. G. Kislyakova and E. Pilat-LohingerA&A, 574 (2015) A22DOI: https://doi.org/10.1051/0004-6361/201424256