REFERENCES
- W. R. Morgan and R. C. Sands, Met. Rev., 1969, 14, 85.
- E. L. J. Papen, Interceram, 1968, (1), 65; 1968, (2), 134.
- G. E. Spriggs, Powder Met., 1961, (7), 296.
- G. E. Spriggs, ibid., 1970, 13, 369.
- A. Miyoshi, A. Hama, and H. Kubota, Powder and Powder Met., 1971, 18, (1), 23.