Cross References:IEC 60050-351:2006IEC 61512-1:1997IEC 61512-2:2001IEC 62264-1:2003IEC 62264-2:2004ISO/IEC 19501:2005EN 61512-1:1999EN 61512-2:2002EN 62264-1:2008EN 62264-2:2008NE-33:2003All current amendments available at time of purchase are included with the purchase of this document.