1. ALEKSANDROV, V.V., FIZIKA GORENIYA I VZRYVA 23: 55 (1987).
2. BEARDEN, A, REV MOD PHYS 39: 125 (1976).
3. BOLDYREV, V. V., DOKLADY AKADEMII NAUK SSSR 259: 1127 (1981).
4. CLARK, R, PHYS REV LETT 62: 1768 (1988).
5. DUNMEAD, S.D., J AM CERAM SOC 72: 2318 (1990).