Magnetic tape sound recording and reproducing systems - Part 4: Mechanical magnetic tape properties (IEC 60094-4:1986 + A1:1994); German version EN 60094-4:1994 + A1:1994— 12 стр.
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.