1. L. Northcott: J. Inst. Metals, 1938, vol. 62, pp. 101–36.
2. G.C. Gould, G.W. Form, and J.F. Wallace: Trans. AFS, 1960, vol. 68, pp. 258–67.
3. O. L. Bustos and W. Reif: Metall., 1993, vol. 47, no. 11, pp. 1005–14.
4. O. L. Bustos and W. Reif: Metall., 1994, vol. 48, no. 2, pp. 123–27.
5. O. L. Bustos and W. Reif: Metall., 1994, vol. 48, no. 7, pp. 538–48.