@book{
international1999iaea,
title={Assessment of Occupational Exposure Due to External Sources of Radiation},
series={General Safety Guide},
number={RS-G-1.3},
year={1999},
isbn={92-0-101799-5},
url={http://www.dgdingfa.net/publications/5742/assessment-of-occupational-exposure-due-to-external-sources-of-radiation},
publisher={INTERNATIONAL ATOMIC ENERGY AGENCY},
address={Vienna}
}