1. Lipsett, S. G., Fire Technol., 2, 118–126 (1966).
2. Yang, K., Nature, 243, 221–222 (1973).
3. Colgate, S. A., and Sigurgeirsson, T., Nature, 224, 552–555 (1973).
4. Board, S. J., and Hall, R. W. in Moving Boundary Problems in Heat Flow and Diffuson (edit. by Ockendon, J. R., and Hodgkins, W. R.), 259–269 (Oxford Univ. Press, 1975).
5. Landau, L. D., and Lifshitz, B. M. Fluid Mechanics, 6, (Pergamon, 1959).