1. 1) H. Bablik, F. Götzl and P. Kukaczka: Sheet Metal Ind., 29 (1952), 173.
2. 2) J. Sedzimir and H. Szymanke: Neue Hütte, 14 (1969), 176.
3. 3) H. Guttman and P. Niessen: Canadian Metallurgical Quarterly, 11 (1972), 609.
4. 4) D. C. Pearce: Semin. Galvanizing Silicon containing Steels, (1975), 21.
5. 5) L. P. Devillers, H. Guttman and P. Niessen: ibid., (1975), 48.