1. The Mythical Man-Month;Brooks,1995
2. ITU-T, Rec. Z.100, Specification and Description Language (SDL), Geneva, 1996
3. ITU-T, Rec. Z.120, Message Sequence Charts (MSC), Geneva, 1996
4. TTCN: the international notation for specifying tests for communications systems;Probert;Comput. Networks ISDN Syst.,1992
5. ISO/IEC 8824: Specification of Abstract Syntax Notation One (ASN.1) (1989)