Lamp caps and holders together with gauges for the control of interchangeability and safety - Part 1: Lamp caps (IEC 60061-1:1969 + supplements A:1970 to V:1997 + A21:1998 to A40:2008, modified); German version EN 60061-1:1993 + A1:1995 to A7:1997 + A21:1998 to A40:2008— 351 стр.
Maritime navigation and radiocommunication equipment and systems - General requirements - Methods of testing and required test results (IEC 60945:2002); German version EN 60945:2002— 88 стр.