1. Barry W. Johnson, The Design and Analysis of Fault Tolerant Digital Systems, manuscript in preparation, Jan. 1987.
2. A. Aviziensis, “The Four-Universe Information System Model for the Study of Fault Tolerance”, Proceedings of the 12th Annual Symposium on Fault-Tolerant Computing, Santa Monica, California, June 1982, pp. 6–13.
3. Jean-Claude Laprie, “Dependable Computing and Fault Tolerance: Concepts and Terminology”, Proceedings of the 15th Annual Symposium on Fault-Tolerant Computing, June 1985, pp. 2–11.
4. J.J. Hopfield, “Neurons with graded response have collective computational properties like those of two-state neurons,” Proc. Natl. Acad. Sci. USA, Vol. 79, April 1982, pp. 2554–2558.
5. J.J. Hopfield, “Neural networks and physical systems with emergent collective computational abilities”, Proc. Natl. Acad. Sci. USA, Vol. 81, May 1984, pp. 3088–3092.