1. Geometrical Product Specifications (GPS). Roundness. Part 1: Vocabulary and Parameters of Roundness, Standard, International Organization for Standardization, Geneva, CH (May 2011).
2. Geometrical Product Specifications (GPS). Roundness. Part 2: Specification Operators, Standard, International Organization for Standardization, Geneva, CH (May 2011).
3. M. Jansen, P. Schellekens, B. Veer, de, Advanced spindle runout-roundness separation method, in: Advanced Mathematical and Computational Tools in Metrology - AMCTM2000, 2000.
4. S. Ozono, On a new method of roundness measurement based on the three points method, in: Proceedings of 1st Int. Conf. on Production Engineering, Tokyo, 1974, 1974.
5. Four-point method of roundness and spindle error measurements;Zhang;CIRP Ann. Manuf. Technol.,1993