1. The Hardness of Metals;Tabor,1951
2. Microindentation Hardness Testing;Mott,1956
3. Hardness testing of ceramic materials;Clinton;Mater. Chem. Phys.,1987
4. An analysis of Knoop microhardness;Hays;Metall.,1973
5. Determination of the temperature dependence of {100} and {112} slip in tungsten from Knoop hardness measurements;Tarkanian,1973