VERCELLONE, STEFANOSTEFANOVERCELLONE2020-12-112020-12-1120192037-4631http://hdl.handle.net/20.500.12386/28804AGILE has been coordinating multi-wavelength campaigns on active galactic nuclei with several major observing facilities since its launch in 2007. This effort allowed us to investigate some remarkable sources both on short and on long time-scales, deriving information on the physical mechanisms responsible for the emission in different energy bands. A complete review of the whole set of AGILE results on extra-galactic sources and their theoretical interpretation is well beyond the scope of this paper, therefore I will present an overview on an handful of outstanding objects and describe the most recent observations.STAMPAenArticle10.1007/s12210-019-00818-42-s2.0-85069717268000501308500019https://link.springer.com/article/10.1007%2Fs12210-019-00818-42019RLSFN.tmp...32VFIS/05 - ASTRONOMIA E ASTROFISICA