1. 1) Report on the Heterogeneity of Steel Ingots; JISI, 113 (1926), p.39
2. 2) E. MARBURC; J. Metals, 5 (1953), p.157
3. 6) A. TOMUNSON and J. D. STRINGER: JISI, 188 (1958) 3, p.209
4. 7) B. SOMMER: Hutn Listy, 7 (1971), p.487
5. 11) G. C. CORNFIELD and R. H. JOHNSON: JISI, 211 (1973), p.567