@book{
      international1997iaea,
      title={Sampling, Storage and Sample Preparation Procedures for X ray Fluorescence Analysis of Environmental Materials},
      author={ },
      series={entity},
      number={950 },
      year={1997},
      isbn={ },
      url={/publications/5602/sampling-storage-and-sample-preparation-procedures-for-x-ray-fluorescence-analysis-of-environmental-materials },
      publisher={INTERNATIONAL ATOMIC ENERGY AGENCY },
      address={Vienna}
    }