@book{
      international2003iaea,
      title={Guidelines for Radioelement Mapping Using Gamma Ray Spectrometry Data},
      author={ },
      series={entity},
      number={1363 },
      year={2003},
      isbn={92-0-108303-3 },
      url={/publications/6746/guidelines-for-radioelement-mapping-using-gamma-ray-spectrometry-data },
      publisher={INTERNATIONAL ATOMIC ENERGY AGENCY },
      address={Vienna}
    }