Clues on the Galactic evolution of sulphur from star clustersE. Caffau, L. Monaco, M. Spite, P. Bonifacio, G. Carraro, H.-G. Ludwig, S. Villanova, Y. Beletsky and L. SbordoneA&A, 568 (2014) A29DOI: https://doi.org/10.1051/0004-6361/201423873