VDA 280-8B: Colorimetry for Motor Vehicles - Color Matching Systems for Vehicle Interiors - Part B (Version 03/2014) - Gruppenlizenz (group license), AGB (GTC) Art. 10, 2
VDA 280-8A: Colorimetry for Motor Vehicles - Visual Color Matching and Color Assessment - General Part A (Version 03/2014) - Gruppenlizenz (group license), AGB (GTC) Art. 10, 2
VDA 280-7: Colorimetry for motor vehicles - Process for the development of perceptual colour tolerances using visual colour matching (Version 05/2008, translated 04/2013) - Gruppenlizenz (group license), AGB (GTC) Art. 10, 2