Eugenio Bottacini
We present the results of the SIX survey, the deepest hard X-ray (>15 keV) survey to date which samples fluxes of the order of ~10-12 erg cm-2 s-1. This survey is obtained merging the Swift/BAT and the INTEGRAL/IBIS surveys and allows samples of faint fluxes. In this talk we will show the main results of the survey, focusing on the populations of Seyferts and blazars in particular, and discussing their evolutionary properties. We will also discuss future aspects of the SIX survey and its connection to other missions.