Magnetic tape sound recording and reproducing systems - Part 1: General conditions and requirements (IEC 60094-1:1981 + A1:1994); German version EN 60094-1:1993 + A1:1994— 16 стр.
Sound system equipment - Part 12: Application of connectors for broadcast and similar use (IEC 60268-12:1987 + A1:1991 + A2:1994); German version EN 60268-12:1995 + A2:1995— 9 стр.