1. R. Alur, G. J. Holzmann, and D. Peled. An analyser for Message Sequence Charts. Software Concepts and Tools, 17(2):70–77, 1996. Information is available from http://cm.bell-labs.com/cm/cs/what/ubet/.
2. AT&T Labs-Research. DOT on-line reference pages. Information is available from http://www.research.att.com/~north/graphviz/.
3. B-novative. daVinci graph visualisation tool. Information is available from http://www.b-novative.com/.
4. P. Baker, C. Jervis, and D. King. An optimised algorithm for test script generation. Patent GB18137.0, 2000.
5. P. Baker, C. Jervis, and W. P. R. Mitchell. Method of generating coordinating messages for distributed test scripts. Patent GB18138.8, 2000.