1. M. Abadi and L. Cardelli. A Theory of Objects.Springer, 1996.
2. K. Arnold, J. Gosling, and D. Holmes. The Java Programming Language.Addison-Wesley, 3rd edition, 2000.
3. L. Bettini, R.De Nicola, G. Ferrari, and R. Pugliese. Interactive Mobile Agents in X-Klaim. In P. Ciancarini and R. Tolksdorf, editors, Proc. of the 7th Int. IEEE Workshops on Enabling Technologies: Infrastructure for Collaborative Enterprises (WETICE), pages 110–115.IEEE Computer Society Press, 1998.
4. L. Bettini, M. Loreti, and B. Venneri. On Multiple Inheritance in Java. In Proc. of TOOLS EASTERN EUROPE, Emerging Technologies, Emerging Markets, 2002. To appear.
5. Lect Notes Comput Sci;P.D. Blasio,1996