1. BIPM, IEC, IFCC, IUPAC, IUPAP, OIML. Guide to the Expression of Uncertainty in Measurement (GUM). Switzerland: ISO, 1995[S].
2. Guide to the Expression of Uncertainty in Measurement Supplement 1[S].
3. Y.T. Fei: Error Theory and Data Processing[M]. (China Machine Press, China 2004)(in Chinese).
4. Z.M. Liu: Uncertainty and Its Practise[M]. (Standard Press of China. China 2000)(in Chinese).
5. GB/T 10095, 1-2008. Cylindrical Gears–ISO System of Accuracy[S]. (in Chinese).