Vitreous and porcelain enamels - Characteristics of the enamel coatings applied to steel panels intended for architecture; German version EN 14431:2004— 10 стр.
Vitreous and porcelain enamels - Characteristics of enamel coatings applied to steel panels intended for architecture (ISO 28722:2008); German version EN ISO 28722:2011— 12 стр.