1. A. J. Clegg, Foundry Trade J. Int.
9 (1986) 51.
2. H. J. Heine, Foundry Man. & Tech.
114 (1986) 36.
3. S. Shivkumar and B. Gallois, Trans. Am. Foundrymen's Soc.
95 (1987) 791.
4. Idem, ibid.
95 (1987) 801.
5. L. Wang, S. Shivkumar and D. Apelian, ibid.
98 (1990) 923.