The chemical evolution of the Galactic Bulge seen through micro-lensing eventsS. Feltzing, T. Bensby, J. Meléndez, D. Adén, M. Asplund, A. Gould, J. Johnson, S. Lucatello and A. Gal-YamEPJ Web of Conferences, 19 (2012) 06002DOI: https://doi.org/10.1051/epjconf/20121906002