Emission line galaxies and active galactic nuclei in WINGS clusters P. Marziani, M. D’Onofrio, D. Bettoni, B. M. Poggianti, A. Moretti, G. Fasano, J. Fritz, A. Cava, J. Varela and A. Omizzolo A&A, 599 (2017) A83 Published online: 03 March 2017 DOI: 10.1051/0004-6361/201628941