?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=Sotirios+A.&rft.aulast=Tsaftaris&rft.au=Tsaftaris%2C+Sotirios+A.&rft.date=2000&rft.title=Copyright+protection+of+MPEG+1%262+video+sequences+using+digital+watermarking&rft.degree=Other&rft.inst=Aristotle+University+of+Thessaloniki