DS/IEC 544-4:1986 Guide for determining the effects of ionizing radiation on insulating materials. Part 4: Classification system for service in radiation environments
2004DS/EN 60544-4:2004 Electrical insulating materials - Determination of the effects of ionizing radiation - Part 4: Classification system for service in radiation environments
1986DS/IEC 544-4:1986 Guide for determining the effects of ionizing radiation on insulating materials. Part 4: Classification system for service in radiation environments
DS/IEC 544-4:1986 Guide for determining the effects of ionizing radiation on insulating materials. Part 4: Classification system for service in radiation environments was changed to DS/EN 60544-4:2004 Electrical insulating materials - Determination of the effects of ionizing radiation - Part 4: Classification system for service in radiation environments.