Multi-color photometry of the Galactic globular cluster M 75 = NGC 6864. A new sensitive metallicity indicator and the position of the horizontal branch in UVV. Kravtsov, G. Alcaíno, G. Marconi and F. AlvaradoA&A, 469 2 (2007) 529-537DOI: https://doi.org/10.1051/0004-6361:20066721
