Thyristor valves for high voltage direct current (HVDC) power transmission - Part 1: Electrical testing (IEC 60700-1:1998 + A1:2003 + A2:2008) (english version)
Surge arresters - Part 8: Metal-oxide surge arresters with external series gap (EGLA) for overhead transmission and distribution lines of a.c. systems above 1 kV— 123 стр.
Determination of power losses in high-voltage direct current (HVDC) converter stations (IEC 61803:1999 + Corrigendum 1999); German version EN 61803:1999— 22 стр.