1. An architecture for Differentiated Services;Blake;RFC 2475, IETF,1998
2. Per hop behavior identification codes;Brim;RFC 2836, IETF,2000
3. Definition of the Differentiated Services field (DS Field) in the IPv4 and IPv6 headers;Nichols;RFC 2474, IETF,1998
4. An expedited forwarding PHB;Jacobson;RFC 2598, IETF,1999
5. A two-bit Differentiated Services architecture for the Internet;Nichols;Internet Draft, IETF,1997