Specification and approval of welding procedures for metallic materials - Part 3: Welding procedure tests for the arc welding of steel (includes Amendment A1:1997); German version EN 288-3:1992 + A1:1997— 27 стр.
Aerospace series - Quality management systems - Requirements for Aerospace Quality Management System Certification/Registrations Programs; German and English version EN 9104:2006— 51 стр.