1. Seee.g. 1 to 30 given in the paper by F. Oeters:Arch. Eisenhuettenw., 1966, vol. 37, pp. 209–19.
2. Spec. Rept.;A. V. Bradshaw,1965
3. K. Niwa:Tetsu to Hagané, 1967, vol. 53, p. S370.
4. W. G. Davenport, A. V. Bradshaw, and F. D. Richardson:J. Iron Steel Inst., 1967, vol. 205, pp. 1034–42.
5. T. Choh and M. Inouye:Tetsu to Hagané, 1968, vol. 54, pp. 19–34.