1. Lesk, M.: Practical digital libraries - Books, Bytes and Bucks. Morgan-Kaufmann, San Francisco (1996)
2. Soergel, D.: A framework for digital library research. Broadening the vision. D-Lib magazine 8(12) (2002)
3. Ramelli, A.: Le diverse et artificiose machine (...). Parigi: in casa del’autore (1588), Also available online at CNAM, http://cnum.cnam.fr/fSYN/fDY3.html
4. Fingerhut, M.: Le site Web de la bibliothèque considéré comme un espace. Bulletin des bibliothèques de France 45(3) (2000)
5. Lecture Notes in Computer Science;M. Christoffel,2002