1. Bowden, F. P., and Brunton, J. H., Nature, 183, 873 (1958).
2. Brunton, J. H., Nature, 182, 980 (1958).
3. Stanyukovich, K. P., Unsteady Motion of Continuous Media, 48 (Pergamon Press, 1960).
4. Cole, R. H., Underwater Explosions, 43 (Dover, 1965).
5. Shapiro, A. H., The Dynamics and Thermodynamics of Compressible Fluid Flow, 980 (Ronald Press, 1954).