1. ISO 5436-1: GPS, Surface texture: Profile method; Measurement standards, Part 1: Material measures, 2000.
2. ISO 25178-70: GPS, Surface texture: Areal – Part 70: Material measures 2014.
3. Calibration and verification of areal surface texture measuring instruments;Leach;CIRP Ann.,2015
4. ISO 25178-601: GPS, Surface texture: Areal – Part 601: Nominal characteristics of contact (stylus) instruments, 2010.
5. DIN Deutsches Institut für Normung e.V. International vocabluary of metrology - Basic and general concepts and associated terms (VIM). German-English Version ISO IEC Guide. Berlin: Beuth; 2010.