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2. Geometrical tolerances: improved linear approximation of least squares evaluation of circularity by minimum variance;Nam-Hyun;International Journal of Machine Tools and Manufacture,1996
3. O. Odayappan, Development of Methodologies for Measurement of Circles on a Coordinate Measuring Machine. Master Thesis, University of North Carolina at Charlotte, Charlotte, NC, 1992.
4. BCR Information—Applied Metrology; Testing of Three Coordinate Measuring Machine Evaluation Algorithms. Report EUR 10909 EN, 1986.
5. BCR Information—Applied Metrology; Testing Coordinate Measuring Machine Algorithms. Report EUR 13417 EN, 1991.