Aerospace series - Aluminium alloy AL-P2024-T351 - Sheet and strip with improved chemical milling capability 1,6 mm <kleiner => a <kleiner => 6 mm; German and English version EN 3999:2007— 17 стр.
Aerospace series - Metallic materials - General organization of standardization; links between types of EN standards and their use; German version EN 4258:1998— 16 стр.