1. D. A. Jones and R. E. Westerman, General Electric Hanford Atomic Products Operation Rep. HW-79350 (1963).
2. S. T. Wlodek, General Electric Co. Rep. R62FPD140 (1962).
3. F. S. Pettit and E. J. Felton,J. Electrochem. Soc. 111, 135?139 (1964).
4. J. S. Wolf, Ph.D. Thesis, University of Florida (1965).
5. C. S. Barrett and T. B. Massalski,The Structure of Metals, 3rd ed. (McGraw-Hill, New York, 1966), pp. 193?207.