Fast optimum decoding for nonadditive readable watermarking. - Riccardo Baitello; Mauro Barni; Franco Bartolini; Roberto Caldelli; Alessia De Rosa (Security and Watermarking of Multimedia Contents, 2001)

From watermark detection to watermark decoding: a PPM approach. - Riccardo Baitello; Mauro Barni; Franco Bartolini; Vito Cappellini (Signal Process., 2001)