1. Katz, R.N. “Science” 208, 23 May 1980, p. 841–847.
2. Katz, R.N. In Nitrogen Ceramics, ed. F.L. Riley, Noordhoff International Publishing, Leyden, 1977, p.646.
3. McLean, A.F. In Ceramics for High Performance Applications-II, eds. J.J. Burke, E.M. Lenoe and R.N. Katz, Brook Hill Publishing Co., Chestnut Hill, MA, 1978, p.1–34.
4. Wallace, F.B., Stone, A.J., and Nelson, N.R. Ibid p.593–624.
5. Automotive Technology Development, Contractors Coordination Meeting, Dept. of Energy, Office of Transportation Programs, DOE CONF 801182 (see p.61–193).