1. Oswatitsch, K., and F. Keune: Proceedings of the Conference on High- Speed Aeronautics, Polytechnic Institute of Brooklyn, January, 1955.
2. Maeder, P. F., and H. U. Thommen: J. Aeronautical Sci. 28, 187–188 (1955).
3. Maeder, P. F., and H. U. Thommen: Brown University, Division of Engineering, Technical Report WT—25, July, 1957.
4. Maeder, P. F., and A. D. Wood: Brown University, Division of Engineering, Technical Report WT—24, June, 1957.
5. Spreiter, J. R., and A. Y. Alksne: NACA, TN 3970, May, (1957).