1. V. D. Alekseenko, S. S. Grigoryan, A. F. Novgorodov, and G. V. Rykov, ?Experimental investigations of the dynamics of soft soils,? Dokl. Akad. Nauk SSSR,133, No. 6 (1960).
2. S. S. Grigoryan, ?Solution of the problem of an underground explosion in soft soils,? Prikl. Mat. Mekh.,28, No. 6 (1964).
3. V. M. Tsvetkov, I. A. Sizov, and A. D. Polikarpov, ?The behavior of a brittle-fracturing medium with an underground explosion,? FTPRPI, No. 4 (1977).
4. V. M. Tsvetkov, I. A. Sizov, and N. M. Syrnikov, ?The mechanism of the fracture of a brittle medium with an underground explosion,? FTPRPI, No. 6 (1977).
5. The Physics of Explosion [in Russian], Nauka, Moscow (1975).