Atmospheric effects of stellar cosmic rays on Earth-like exoplanets orbiting M-dwarfs F. Tabataba-Vakili, J. L. Grenfell, J.-M. Grießmeier and H. Rauer A&A, 585 (2016) A96 Published online: 23 December 2015 DOI: 10.1051/0004-6361/201425602