1. ISO 12181-1:2011, Geometrical product specifications (GPS). Roundness. Part 1: vocabulary and parameters of roundness, Standard, International Organization for Standardization, Geneva, CH, 2011.
2. ISO 12181-2:2011, Geometrical product specifications (GPS). Roundness. Part 2: Specification operators, Standard, International Organization for Standardization, Geneva, CH, 2011.
3. Simple method for separating spindle error from test ball roundness error;Donaldson;Ann. CIRP,1972
4. Richard Clouser and Earl Holland, Spindle accuracy;Bryan;American Machinist,1967
5. In-situ measuring system of circularity using an industrial robot and a piezoactuator;Kato;J. Jpn. Soc. Precis. Eng.,1990