1. C. T. Crowe and P. G. Willoughby, AIAA Preprint No. 66-523, AIAA 4th Aerospace Sciences Meeting, June 27?29, 1966.
2. R. L. Glick, B. K. Hodge, and L. H. Caveny, AIAA Preprint No. 67-470, AIAA 3rd Propulsion Joint Specialist Conf., July 17?21, 1967.
3. É. I. Maksimov, Yu. M. Maksimov, and A. G. Merzhanov, Fiz. Goreniya i Vzryva,3, No. 3, 323 (1967).
4. M. H. Lucy, J. Spacecraft and Rockets,5, No. 2, 271 (1968).
5. I. B. Anderson and R. E. Reichenbach, AIAA,6, No. 2, 271 (1968).