First stars XII. Abundances in extremely metal-poor turnoff stars, and comparison with the giants
P. Bonifacio, M. Spite, R. Cayrel, V. Hill, F. Spite, P. François, B. Plez, H.-G. Ludwig, E. Caffau, P. Molaro, E. Depagne, J. Andersen, B. Barbuy, T. C. Beers, B. Nordström and F. Primas
A&A, 501 2 (2009) 519-530
DOI: https://doi.org/10.1051/0004-6361/200810610
