1. T. M. Sandutsa and L. A. Dergaputskaya, Ogneupory, No, 12, 44?45 (1989).
2. Basalt-Based Fiber Composites and Structures [in Russian], Naukova Dumka, Kiev (1988).
3. P. Dietriechs and W. Kronert, Gaswarme Int.,30, No. 7?8, 338?350 (1981).
4. G. Ziegler, Technische Mitteilungen,80, No. 4, 250?259 (1987).
5. D. D. Johnson, A. R. Holtz, and M. F. Grether, Ceram. Eng. Sci. Proc.,8, No. 7?8, 744?754 (1987).