1. R. Baker: Metall. Mater. Technol., 1984, vol. 16, pp. 264–67.
2. R.J. Pomfret: Steel Times Int. 1990, May, pp. 11–16.
3. T. Fujii: Trans. Iron Steel Inst. Jpn., 1985, vol. 25, pp. 658–69.
4. R.J. Pomfret and H.B. Bell: Proc. Phosphorus in Steel Conf., Scottish Association of Metals, Glasgow, United Kingdom, 1987, pp. 7–26.
5. T.B. Winkler and J. Chipman: Met. Technol., 1946, vol. 13, pp. 3–24.