1. Pearson, T. G., Roy. Inst. Chem., (London), Lectures, Monographs, Repts., 1955, No. 3, 26–33.
2. See ref. 1, p. 33.
3. Leitetzen, M. G., Legkie Splavy, Akad. Nauk SSSR. Inst. Met., 5, No. 10, 34 (1036).
4. Anderson, A. A., and J. E. Sparkman, Chem. Eng., 66, 75 (1959).
5. See ref. 1, pp. 26–33.