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Ioannis Kostopoulos. Η υδατογράφηση ως μέσο προστασίας πνευματικών δικαιωμάτων και ελέγχου αυθεντικότητας ψηφιακών εικόνων. PhD thesis, University of Patras, Greece, 2003. [doi]
Abstract is missing.