Non-LTE abundances of Mg and K in extremely metal-poor stars and the evolution of [O/Mg], [Na/Mg], [Al/Mg], and [K/Mg] in the Milky WayS. M. Andrievsky, M. Spite, S. A. Korotin, F. Spite, P. Bonifacio, R. Cayrel, P. François and V. HillA&A, 509 (2010) A88DOI: https://doi.org/10.1051/0004-6361/200913223
