1. ISO/TS 12781-1: 2011, Geometrical product specifications (GPS) – Flatness – Part 1: Vocabulary and parameters of flatness.
2. ISO/TS 12781-2: 2011, Geometrical product specifications (GPS) – Flatness – Part 2: Specification operators.
3. National standard on dimensioning and tolerancing;ANSI/ASME Y14.5M.,2009
4. Flatness;Haitjema,2014
5. Sampling uncertainty in coordinate measurement data analysis;Choi;Precis Eng,1998