@book{ international1996iaea, title={Clearance Levels for Radionuclides in Solid Materials: Application of Exemption Principles Interim Report for Comment}, series={TECDOC Series}, number={855}, year={1996}, url={http://www.dgdingfa.net/publications/5502/clearance-levels-for-radionuclides-in-solid-materials-application-of-exemption-principles-interim-report-for-comment}, publisher={INTERNATIONAL ATOMIC ENERGY AGENCY}, address={Vienna} }