The exotic chemical composition of the Sagittarius dwarf spheroidal galaxy L. Sbordone, P. Bonifacio, R. Buonanno, G. Marconi, L. Monaco and S. Zaggia A&A, 465 3 (2007) 815-824 Published online: 22 January 2007 DOI: 10.1051/0004-6361:20066385