@article{article9508b822,
title   = {First stars XII. Abundances in extremely metal-poor turnoff stars, and comparison with the giants},
author = {Bonifácio, P and Spite, M and Cayrel, R and Barbuy, Beatriz Leonor Silveira and Hill, V and François, P and Plez, B and Ludwig, H.-G and Caffau, E and Molaro, P and Depange, E and Andersen, J and Beers, T. C and Nordström, B and Primas, F},
year = {2009},
doi = {10.1051/0004-6361/200810610},
journal   = {Astronomy e Astrophysics}
}