1. Alberts, B.: Essential Cell Biology. An Introduction to the Molecular Biology of the Cell. Garland Publ. Inc. London (1998)
2. Bernardini, F.: Analisi dinamica di sistemi a membrane. “Tesi di Laurea in Informatica” Pisa (2002)
3. Bernardini, F., Manca, V.: Dynamical Aspects of P Systems. BioSystems (to appear)
4. Bonanno, C., Manca, V.: Discrete Dynamics in Biological Models. Romanian Journal of Information Science and Technology 5 (1–2) (2002) 45–67
5. Dassow, J., Păun Gh.: Regulated Rewriting in Formal Languages. Springer-Verlag Berlin (1989)