Heat-treated steels, alloy steels and free-cutting steels - Part 17: Ball and roller bearing steels (ISO 683-17:1999); German version EN ISO 683-17:1999— 20 стр.
Geometrical Product Specifications (GPS) - Surface texture: Profile method - Terms, definitions and surface texture parameters (ISO 4287:1997); German version EN ISO 4287:1998— 13 стр.