Revidert
IEC 60721-3-3:1987/AMD2:1993 ED1
IEC 60721-3-3:1994+AMD1:1995+AMD2:1996 CSV
IEC 60721-3-3:1994+AMD1:1995+AMD2:1996 CSV/COR1:2008
IEC 60721-3-3:1994 ED2