@book{ international1988iaea, title={User's Guide for the Uranium Ore Reserve Calculation System (URAD)}, series={TECDOC Series}, number={484}, year={1988}, url={http://www.dgdingfa.net/publications/739/users-guide-for-the-uranium-ore-reserve-calculation-system-urad}, publisher={INTERNATIONAL ATOMIC ENERGY AGENCY}, address={Vienna} }