ISO 6980:1984 Reference beta radiations for calibrating dosemeters and doseratemeters and for determining their response as a function of beta radiation energy
1996ISO 6980:1996 Reference beta radiations for calibrating dosimeters and dose-rate meters and for determining their response as a function of beta-radiation energy
1984ISO 6980:1984 Reference beta radiations for calibrating dosemeters and doseratemeters and for determining their response as a function of beta radiation energy