1. Knudsen, M., Ann. Phys. (Leipzig), 47, 697 (1915).
2. Alty, T., and Mackay, C. A., Proc. Roy. Soc., A, 149, 104 (1935).
3. Hickman, K. C. D., Indust. and Eng. Chem., 46, 1442 (1954).
4. Silver, R. S., and Simpson, H. C., The Condensation ef Superheated Steam 39 (H.M. Stationery Office, 1962).
5. Silver, R. S., Paper P14/64, presented to the Inst. Mech. Eng., London December 4, 1963.