1. Proc. 4th Intern. Conf. on Chemical Vapor Deposition;Yang,1973
2. Proc. 2nd Intern. Conf. on Chemical Vapor Deposition;Huegel,1971
3. K.S.G. Pertwee, US Patent 3,127,641 (1964).
4. High Temperature Materials;Roberts,1969
5. M.S. Thesis;Bryant,1971