1. T. L. Joseph:Metals Technol., AIME TP No. 2021, April 1946.
2. Blast Furnace Theory and Practice, Strassburger, Brown, Stephenson, and Dancy, eds., chapt. 1, Gordon & Breach, New York, N.Y., 1969.
3. E. W. Shallock:Blast Furn. SteelPlant, 1961, vol. 49, pp. 145–47, 158.
4. O. R. Rice:Blast Furn. SteelPlant, 1949, vol. 33, pp. 1523–28.
5. Y. Eischiawa:Rev. Met., March, 1976, pp. 283–317.