1. M. Asnani and F. L. Kuonen, SAE Paper 850358.
2. J. Miyauchi and Y. Kobayashi, SAE Paper 850313.
3. P. Walzer, H. Heinrich and M. Langer, SAE Paper 850567.
4. Engineering Applications of Ceramic Materials;Helms,1985
5. Engineering Applications of Ceramic Materials;Carruthers,1985