1. Hardness of Various Steels at Elevated Temperatures;Garofalo;Trans. ASM,1953
2. Apparatus for Determining the Hardness of Metals at Temperatures up to 3000 °F;Semchyshen;Trans. ASM,1958
3. Temperature Dependence of the Hardness of Pure Metals;Westbrook;Trans. ASM,1953
4. Some Notes on the Use of a Diamond Pyramid for Hardness Testing;Smith;J. Iron Steel Inst. (London),1925