iec61133-1992, IEC 61109-1992, iec+61133, iec 61133, iec60719-1992, IEC 61133 1992, IEC 61133-1992, IEC+61133+1992, IEC+61133-1992, iec61133, iec-61099-1992, IEC 60062-1992, IEC 60719-1992, iec61109 1992, IEC 61194-1992, IEC 61194 1992, IEC 61133-2016, iec+61133+, iec60551-1992, IEC 61208-1992.