1. 1) W. J. Choyke and L. Patrick: Silicon Carbide—A High Temperature Semiconductor, ed. by J. R. O’Conner and J. Smiltens, (Pergamon Press, Oxford 1960).
2. 2) Silicon Carbide and Related Materials 1995, ed. by S. Nakashima, H. Matsunami, S. Yoshida and H. Harima, IOP Conf. Proc. No. 142 (Institute of Physics and Physical Society, London 1996).
3. 3) Silicon Carbide Materials: Processing, and Devices, ed. by Z. C. Feng and J. H. Zhao, Optoelectronic Properties of Semiconductors and Superlattices Vol. 20 (Taylor and Franscis Books, London 2004).
4. 4) J. R. Waldrop, R. W. Grant, Y. C. Wang and R. F. Davis: J. Appl. Phys. 72 (1992) 4757–4760.
5. 5) J. R. Waldrop and R. W. Grant: Appl. Phys. Lett. 62 (1993) 2685–2687.