1. International Organisation for Standardisation. X and gamma reference radiations for calibrating dosemeters and doserate meters and for determining their response as a function of photon energy—Part 1: Radiation characteristics and production methods. ISO 4037-1 (Geneva: ISO) (1997).
2. International Organisation for Standardisation. X and gamma reference radiations for calibrating dosemeters and doserate meters and for determining their response as a function of photon energy—Part 3: Calibration of area and personal dosemeters and the measurement of their response as a function of energy and angle of incidence. ISO 4037-3 (Geneva: ISO) (1999).
3. International Electrotechnical Commission. Radiation protection instrumentation—Measurement of personal dose equivalents Hp(10) and Hp(0.07) for X, gamma, neutron and beta radiations—Direct reading personal dose equivalent meters and monitors. IEC 61526 (Geneva: IEC) (2005).
4. International Electrotechnical Commission. Radiation protection instrumentation—Ambient and/or directional dose equivalent (rate) meters and/or monitors for beta, X and gamma radiation. IEC 60846 (Geneva: IEC) (2002).
5. Ankerhold, U. Catalogue of X-ray spectra and their characteristic data—ISO and DIN radiation qualities, therapy and diagnostic radiation qualities, unfiltered X-ray spectra—PTB-Dos-34, PTB report, April (2000), ISBN 3-89701-513-7.