Categories Bibliography Vagena E., 2010, Athens, Nomiki Vivliothiki Post author By Post date November 9, 2013 The technical protection and digital management of copyright. ← Vagena E., 2011, Athens, Nomiki Vivliothiki → Beard J. – Seville C., 2008, The journal of the copyright society of the U.S.A, vol. 56, p. 589