@book{
international1988iaea,
title={Principles for the Exemption of Radiation Sources and Practices from Regulatory Control},
series={Safety Series},
number={89},
year={1988},
isbn={92-0-123888-6},
url={http://www.dgdingfa.net/publications/3686/principles-for-the-exemption-of-radiation-sources-and-practices-from-regulatory-control},
publisher={INTERNATIONAL ATOMIC ENERGY AGENCY},
address={Vienna}
}