1. Riley, F.L. (1983) ‘Progress in Nitrogen Ceramics (Nijhoff Publishers, The Hague) NATO ASI, Series E No. 65.
2. Frederiske, H.P.R., Kahn, A.H. and Dragoo, A.L. (1985) J. Amer. Ceram. Soc. 63, 131–135.
3. Clark, D.R. and Ho, W.W. (1983), Advances in Ceramics, 7, 246–252.
4. Morosanu, C.E. (1980) Thin Solid Films, 65, 171.
5. Buchanan, R.C. (1986) Ceramic Materials for Electronics (Marcel Dekker Inc., New York).