1. J. Szekely, J. W. Evans, and H. Y. Sohn, Gas-Solid Reactions, Academic Press, New York, NY, 1976.
2. H. Y. Sohn, J. Met., 1976, vol. 28, pp. 29-33.
3. H. Y. Sohn, J. Korean Inst. Chem. Eng., 1976, vol. 14, pp. 65-76.
4. H.Y. Sohn: Rate Processes of Extractive Metallurgy, H.Y. Sohn and M.E. Wadsworth, eds., Plenum Press, New York, NY, 1979, pp. 1–51.
5. M. Ishida and C. Y. Wen, AIChE J., 1968, vol. 14, pp. 65-76.