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2. Farmer, W., Guttman, J., Swarup, V.: Security for mobile agents: Issues and requirements. In: Proc. 19th National Information System Security Conf. (1996)
3. Ellison, C.M., Frantz, B., Lampson, B., Rivest, R., Thomas, B., Ylönen, T.: SPKI requirements. RFC 2693, Internet Engineering Task Force (1999)
4. Jansen, W., Karygiannis, T.: Mobile agent security. Technical Report NIST Special Publication 800-19, National Institute of Standards and Technology (1999)
5. Sun: Java 2 SDK security documentation (2003), http://java.sun.com/security/