@article{article085c707c,
title   = {FORS2/VLT survey of Milky Way globular clusters: I. Description of the method for derivation of metal abundances in the optical and application to NGC 6528, NGC 6553, M 71, NGC 6558, NGC 6426, and Terzan 8},
author = {Dias, B and Barbuy, Beatriz Leonor Silveira and Saviane, I and Held, E. V and Costa, G. S. da and Ortolani, S and Vásquez, S and Gullieuszik, M and Katz, D},
year = {2015},
doi = {10.1051/0004-6361/201423996},
journal   = {Astronomy & Astrophysics}
}