1. IXth Plenary Assembly,1988
2. Bellcore: Generic System Requirements in support of Switched Multimegabit Data Service;Bellcore Technical Reference TR-TSV-000772,1991
3. Securing Local Area and Metropolitan Area Networks: A Practical Approach;Varadharajan,1995
4. Distributed Queue Dual Bus (DQDB) Sub-network of a Metropolitan Area Network (MAN);IEEE 802.6,1990
5. Digital Subscriber Signalling No. 1, Signalling Specification for frame mode bearer service, CCITT Recommendation Q.933.