1. J. Chipman,Metall. Trans., 3, 55–64(1972).
2. G. Tammann and G. Bandle,Arch. Eisenhüttenwes., 7, 571–578 (1934).
3. F. Osmond,Proc. Eng. Soc. Western Pennsylvania, 18, 503–551 (1902).
4. H.M. Howe,Metllographist, 6, 85–95 (1903). Note: Howe defined cementite as a “definite carbide of iron, Fe3C very brittle, harder than steel... and present in proportions which in a general way increase with the proportion of carbon present≓
5. E. De Mille Campbell,JISI, II, 228 (1899).