@book{
  international1997iaea,
  title={Uranium Exploration Data and Techniques Applied to the Preparation of Radioelement Maps},
  series={TECDOC Series},
  number={980},
  year={1997},
  url={https://www.iaea.org/publications/5635/uranium-exploration-data-and-techniques-applied-to-the-preparation-of-radioelement-maps},
  publisher={INTERNATIONAL ATOMIC ENERGY AGENCY},
  address={Vienna}
}