Na-O anticorrelation and HB - III. The abundances of NGC 6441 from FLAMES-UVES spectraR. G. Gratton, S. Lucatello, A. Bragaglia, E. Carretta, Y. Momany, E. Pancino and E. ValentiA&A, 455 1 (2006) 271-281DOI: https://doi.org/10.1051/0004-6361:20064957