1. Berstel, J., Perrin, D.: Theory of Codes. Academic Press, New York (1985)
2. Bonizzoni, P., De Felice, C., Mauri, G., Zizza, R.: Linear splicing and syntactic monoid (2004) (submitted)
3. Lecture Notes in Computer Science;P. Bonizzoni,2003
4. Lecture Notes in Computer Science;P. Bonizzoni,2003
5. Lecture Notes in Computer Science;P. Bonizzoni,2001