1. D. D. Double and A. Hellawell, in ?The Metallurgy of Cast Iron?, edited by B. Lux, I. Minkoff and F. Mollard, (Georgi, St Saphorin, Switzerland, 1975) p. 509.
2. B. Lux, I. Minkoff, F. Mollard and E. Thury, ibid.in ?, p. 495.
3. J. P. Sadocha and J. E. Gruzleski, ibid.in ?, p.443.
4. D. D. Double and A. Hellawell, Acta Metall. 22 (1974) 481.
5. I. Minkoff, ?The Physical Metallurgy of Cast Irons?, (Wiley-Interscience, New York, 1983) p. 108.