2005IEC 61185:2005 Ferrite cores (ETS-cores) intended for use in power supply applications - Dimensions
1970IEC 61185:1992/AMD1:1995 Amendment 1 - Magnetic oxide cores (ETD-cores) intended for use in power supply applications - Dimensions
1992IEC 61185:1992 Magnetic Oxide Cores (ETD-Cores) Intended for Use in Power Supply Applications - Dimensions First Edition; (Amendment 1-1995) (Edition 1.0; Amendment 1: 2/1995)