1. E. Gervais, H. Levert andM. Bess,AFS Trans. 88 (1980) 183.
2. H. Lehey, in Proceedings of 25th Annual Conference of Metallurgists, 17?20 August 1986, Toronto, Ontario, pp. 143?153.
3. B. Leslie andB. Bunch,ibid, pp. 265?274
4. Michihiro Tagami andHitoshi Oikawa,Light Metals 33 (1983) 9.
5. Y. H. Zhu, in Proceedings of 25th Annual Conference of Metallurgists, 17?20 August 1986, Toronto, Ontario, pp. 25?33.