1. I. J. Polmear,J. Inst. Metals
86 (1957–58) 113.
2. Idem, ibid
87 (1958–59) 24.
3. Idem, J. Aust. Inst. Met.
11 (1966) 246.
4. G. W. Lorimer andR. B. Nicholson,Acta Met.
14 (1966) 1109.
5. R. B. Nicholson, G. Thomas, andJ. Nutting,J. Inst. Metals
87 (1958–59) 429.