1. ASME Y 14.5M. Dimensioning and Tolerancing, New York: The American Society of Mechanical Engineers, 1994.
2. Forbes AB. Least-squares best-fit geometric elements. Technical Report DITC 140/89, National Physics Laboratory, UK, 1989.
3. Minimum zone evaluation of surface;Murthy;Int J Mach Tool Design and Res,1980
4. Evaluation of spherical form errors—Computation of spherical form error by means of minimum method and some examinations with using simulated data;Kanada;Prec Eng,1995
5. Fukuda M, Shimokohbe A. Algorithms for form evaluation, methods of minimum zone, and least squares. Proceedings of the International Symposium on Metrology, Quality, and Production, Tokyo 1984; 197–202.