1. Rate of Ionization behind Shock Waves in Air. I. Experimental Results
2. Approach to equilibrium lonization behind strong shock waves in argon
3. Structure of a Shock Front in Argon
4. K. Wray, J. D. Teare, B. Kivel, and P. Hammerling, Avco-Everett Research Laboratory, Research Rept. 83 (1959).
5. P. Hammerling, J. D. Teare, and B. Kivel,Proceedings of the Fourth International Conference on Ionization Phenomena in Gases, edited by N. R. Nilsson (North-Holland Publishing Company, Amsterdam, 1960), IV D, p. 1092.