Stylianos PapathanassopoulosRalph Negrine is professor of political communication at the University of Sheffield.Christina Holtz-Bacha is professor of communication of the University of Erlangen-Nürnberg, Germany.Paolo Mancini is professor of ommunication at the University of Perugia, Italy. Stylianos Papathanassopoulos is professor of media organization and policy at the National and Kapodistrian University of Athens. Read More Read Less