1. For example, Lodge, A. S., Elastic Liquids, chap. 9 (Academic Press, London and New York, 1964).
2. Schultz-Grünow, F., Ver. Deut. Ing. -Z., 97, 409 (1955).
3. Greensmith, H. W., and Rivlin, R. S., Phil. Trans. Roy. Soc., A 245, 399 (1953).
4. Thom, A., and Apelt, C. J., Rep. Mem. Aero. Res. Coun., No. 3090 (HMSO, London).
5. Adams, N., and Lodge, A. S., Phil. Trans. Roy. Soc., A 256, 149 (1964).