Precise reddening and metallicity of NGC 6752 from FLAMES spectraR. G. Gratton, A. Bragaglia, E. Carretta, F. De Angeli, S. Lucatello, G. Piotto and A. Recio BlancoA&A, 440 3 (2005) 901-908DOI: https://doi.org/10.1051/0004-6361:20053019
