1. H. Kolsky, Nature,173, 4393 (1954).
2. T. Takakura, Publ. Astron. Soc. Japan,7, 210 (1955).
3. M. A. Cook, The Science of High Explosives, Reinhold, N.Y. (1958).
4. W. H. Anderson and C. L. Long, Appl. Phys.,36, 4 (1965).
5. L. M. Gorshunov, G. P. Kononenko, and E. I. Sirotinin, Zh. Eksp. Teor. Fiz.,53, No. 3(9) (1967).