@book{
international1989iaea,
title={Construction and Use of Calibration Facilities for Radiometric Field Equipment},
series={Technical Reports Series},
number={309},
year={1989},
isbn={92-0-145189-X},
url={http://www.dgdingfa.net/publications/1412/construction-and-use-of-calibration-facilities-for-radiometric-field-equipment},
publisher={INTERNATIONAL ATOMIC ENERGY AGENCY},
address={Vienna}
}