1. Q. Wang and J. Jin: Proc. 5th Asian Foundryman, Guoxiong Sun, ed., (Southeast University Press, Nanjing, P.R. China, 1997) Nanjing, 1997.9, p. 534.
2. X. Bian and J. Ma: Chin. J. Mech. Eng., 1992, vol. 5, pp. 176–82.
3. A. Cziraki, B. Fogarassy, G.V. Tendeloo, P. Lamparter, M. Tegze, and I. Bakonyi: J. Alloys Compounds, 1994, vol. 21, p. 135.
4. A. Pacz: U.S. Patent 1387900, Aug. 1921.
5. S. Kham and R. Elliot: J. Mater. Sci., 1994, vol. 29, p. 736.