Laminated core packages for transformers and inductors used in telecommunication and electronic equipment - Part 1: Dimensions (IEC 61021-1:1990); German version EN 61021-1:1997— 6 стр.
Laminations for transformers and inductors for use in telecommunication and electronic equipment - Part 2: Specification for the minimum permeabilities of laminations made of soft magnetic metallic materials (IEC 60740-2:1993)— 16 стр.
Laminated core packages for transformers and inductors for use in telecommunication and electronic equipment - Part 2: Electrical characteristics for cores using YEE 2 laminations (IEC 61021-2:1995); German version EN 61021-2:1997— 12 стр.
