Probing AGN triggering mechanisms through the starburstiness of the host galaxies A. Lamastra, N. Menci, F. Fiore, P. Santini, A. Bongiorno and E. Piconcelli A&A, 559 (2013) A56 Published online: 13 November 2013 DOI: 10.1051/0004-6361/201322667