1. Ardovini A, Cinque L, Sangineto E (2008) Identifying elephant photos by multi-curve matching. Pattern Recognit 41:1867–1877
2. Agreste S (2002–2003) Tecniche di Watermarking mediante wavelet, Thesis in computer science, A.A. supervisor L. Puccio
3. Bartolini F, Cardelli R, Cappellini V, De Rosa A, Piva A (2002) Digital watermarking: a solution to electronic copyright management system requirements. Dipartimento di Elettronica e Telecomunicazioni.Universita’ di Firenze. http://Medicif.org/DigLibrary/Stateart/Ipr/Piva/PivaDoc.Html
4. Bartolini F, Caldelli R, Cappellini V, De Rosa A, Piva A (2001) Tecnologie di marchiatura elettronica per i Beni Culturali. Alta Frequenza Rivista di Elettronica 13(2)
5. Barni M, Bartolini F, Cappellini V, Piva A (1997) Robust watermarking of still images for copyright protection. Department of Electronic Engineering, University of Firenze, Florence