1. K. D. Millis, A. P. Gagnebin and N. B. Pilling: U. S. Patent 2,485,760, October 25, 1949.
2. T. Ototani and Y. Tokunaga: “Structural Diagram and Mechanical Properties of Nodular-Acicular Cast Iron,”Imono 33, 1961, p. 570.
3. H. G. Gerlach: “Production and Use of Bainitic and Martensitic Spheroidal-Graphite Irons,”Metallurgia, Vol. 72, No. 433, November 1965, p. 215.
4. J. Bevan: Climax Molybdenum Company, unpublished data.
5. C. R. Isleib and R. E. Savage: “Ductile Iron — Alloyed and Normalized,”AFS Trans., Vol. 65, 1957, p. 75.