Paints and varnishes - Determination of mar resistance - Part 1: Method using a curved stylus (ISO 12137-1:1997, including Technical Corrigendum 1:1998); German version EN ISO 12137-1:2006— 12 стр.
Paints and varnishes - Determination of scratch resistance - Part 1: Method using a curved stylus (ISO/DIS 12137-1:2009); German version prEN 12137-1:2009