1. CAP debis, “Promod-PLUS Reference Manual”,Aachen 1992
2. R. Blumofe, Alan Hecht, “Executing Real-Time Structured Analysis Specifications” ACM SIGSOFT, Software Engineering Notes vol 13 no 3, July 1988
3. Computer & Software Engineering, “Shortcut Users Manual”,1990
4. Athena Systems Incorporated, “Foresight User’s Guide”, Sunnyvale, USA 1989
5. T. DeMarco, “Structured Analysis and System Specification”, Yourdon Press, New York 1978