Extreme hydrodynamic losses of Earth-like atmospheres in the habitable zones of very active stars C. P. Johnstone, M. L. Khodachenko, T. Lüftinger, K. G. Kislyakova, H. Lammer and M. Güdel A&A, 624 (2019) L10 Published online: 19 April 2019 DOI: 10.1051/0004-6361/201935279