@book{ international2019iaea, title={Thorium Resources as Co- and By-products of Rare Earth Deposits}, series={TECDOC Series}, number={1892}, year={2019}, isbn={978-92-0-163319-4}, url={http://www.dgdingfa.net/publications/13623/thorium-resources-as-co-and-by-products-of-rare-earth-deposits}, publisher={INTERNATIONAL ATOMIC ENERGY AGENCY}, address={Vienna} }