Tracing the evolution of NGC 6397 through the chemical composition of its stellar populations K. Lind, C. Charbonnel, T. Decressin, F. Primas, F. Grundahl and M. Asplund A&A, 527 (2011) A148 Published online: 14 February 2011 DOI: 10.1051/0004-6361/201015356