1. Lecture Notes in Computer Science;S. Abiteboul,1996
2. Afonin, S., Hazova, E., Shundeev, A.: On regular language factorisation: a complete solution for unary case. Tech. Rep. 252, CDMTCS, Auckland (2004)
3. Afonin, S., Shundeev, A., Roganov, V.: Semistructured data search using dynamic parallelisation technology. In: Proceedings of the 26th International Convention MIPRO 2003, Opatija, Croatia, pp. 152–157 (2003)
4. Arbib, M.: Algebraic Theory of Machines, Languages, and Semigroups. Academic Press, London (1968)
5. Lecture Notes in Computer Science;S. Bala,2004