1. Nicholls, P., U.S. Bureau of Mines, Bull. 378 (1933).
2. Bangham, D. H., and Thring, M. W., Coal Research, 48 (1944).
3. Thring, M. W., "A Method for the Control of Combustion Reactions in Fuel-Beds", Trans. Farad. Soc, Symposium on Oxidation (September 1945).
4. For example, Strickland-Constable, R. F., Trans. Farad. Soc., 40, 333 (1944).
5. For example, Lambert, J. D., Trans. Farad. Soc., 32, 452 and 1584 (1936.)