1. Recommendation X.25/Interface between Data Terminal Equipment (DTE) and Data Circuit-terminating Equipment (DCE) for Terminals Operating in the Packet Mode on Public Data Networks, CCITT Orange Book, vol. 7, International Telephone and Telegraph Consultative Committee, Geneva.
2. Proposal for Provisional Recommendation X.75 on International Interworking between Packet Switched Data Networks,1978
3. International Interconnection of Public Packet Networks;Roberts,1976
4. Current Trends in Computer Network Interconnection;Sunshine,1978
5. Some Comments on Simulated Datagram Store and Forward Networks;Price;Computer Networks,1978