prEN 2155-4-1980 Aerospace series; test methods for transparent materials for aircraft glazing; part 4: determination of ultra-violet radiation transmission at 290 to 330 nm
2000PREN 2155-4-2000 Aerospace Series Test Methods for Transparent Materials for Aircraft Glazing Part 4 - Determination of Ultraviolet Light Transmission over Wavelength Range 280 nm to 360 nm (Edition P 1)
1999PREN 2155-4-1999 Aerospace Series - Test Methods for Transparent Materials for Aircraft Glazing Part 4 - Determination of Ultraviolet Light Transmission over the Wavelength Range 280 to 360 nm (Edition 2)
1980prEN 2155-4-1980 Aerospace series; test methods for transparent materials for aircraft glazing; part 4: determination of ultra-violet radiation transmission at 290 to 330 nm