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2. 2) R. A. Harding: The Foundryman, 86 (1993), 197.
3. 3) ASTM, Annual Book of ASTM Standards: Easton, MD, USA, vol. 01.02 (1996), p. 337.
4. 4) T. N. Rouns, K. B. Rundman and D. M. Moore: AFS Trans., 92 (1984), 815.
5. 5) D. J. Moore, T. N. Rouns and K. B. Rundman: AFS Trans., 94 (1986), 255.