Aerospace series; test methods for transparent materials for aircraft glazing; part 5: determination of visible light transmission; german version EN 2155-5:1989— 9 стр.
Road traffic noise reducing devices - Non-acoustic performance - Part 2: General safety and environmental requirements; German version EN 1794-2:1998— 10 стр.
Road traffic noise reducing devices - Non-acoustic performance - Part 2: General safety and environmental requirements; German version EN 1794-2:2003— 23 стр.
Road traffic noise reducing devices - Non-acoustic performance - Part 2: General safety and environmental requirements; German version EN 1794-2:2011— 28 стр.