@book{
international1990iaea,
title={Extension of the Principles of Radiation Protection to Sources of Potential Exposure},
series={Safety Series},
number={104},
year={1990},
isbn={92-0-123590-9},
url={http://www.dgdingfa.net/publications/3702/extension-of-the-principles-of-radiation-protection-to-sources-of-potential-exposure},
publisher={INTERNATIONAL ATOMIC ENERGY AGENCY},
address={Vienna}
}