Road and airfield surface characteristics - Test methods - Part 7: Irregularity measurement of pavement courses: The straightedge test; German version EN 13036-7:2003— 10 стр.
Geotechnical investigation and testing - Laboratory testing of soil - Part 1: Determination of water content (ISO 17892-1:2014); German version EN ISO 17892-1:2014— 16 стр.