1. A Border Gateway Protocol 4 (BGP-4);Rekhter;RFC 1771,1995
2. Inter-domain routing protocol (IDRP);Rekhter;Internetworking: Research and Experience,1993
3. Information technology—Telecommunications and information exchange between system—Protocol for exchange of inter-domain routing information among intermediate systems to support forwarding of ISO 8473 PDUs;International Standards Orgainization;ISO/IEC 10747,1994
4. RIP Version 2: Carrying Additional Information;Malkin;RFC 1723,1994
5. Digital signature protection of the OSPF routing protocol;Murphy,1996