1. R.S. Boyer and J.S. Moore. A Computational Logic Handbook. Academic Press, 1988.
2. N. Brown and D. Mery. Deriving Occam Programs through the Refinement of Unity-like Specifications. In W. Joosen and E. Milgrom, editors, Proceedings European Workshop on Parallel Computing. IOS PRESS, 1992.
3. R.J.R. Back and K. Sere. Deriving an occam implementation of action systems. In C. Morgan and J.C.P. Woodcock, editors, 4rd Refinement Workshop. Springer-Verlag, January 1991. BCS-FACS, Workshops in Computing.
4. BP Innovation Centre and Edinburgh Portable Compilers Ltd. B-Tool Versionl. 1, Reference Manual, 1991.
5. BP Innovation Centre and Edinburgh Portable Compilers Ltd. B-Tool Versionl.1, Tutorial, 1991.