Methods of measurement for waveguides - Part 4: Attenuation of waveguide and waveguide assemblies (IEC 61580-4:1997); German version EN 61580-4:1998— 8 стр.
Methods of measurement for waveguides - Part 4: Attenuation of waveguide and waveguide assemblies (IEC 61580-4:1997); German version EN 61580-4:1998, Corrigendum to DIN EN 61580-4:1999-07; IEC-Cor. :2006 to IEC 61580-4:1997— 3 стр.