@book{
      international2011iaea,
      title={Radiotracer Applications in Wastewater Treatment Plants},
      author={ },
      series={entity},
      number={49 },
      year={2011},
      isbn={ },
      url={/publications/8552/radiotracer-applications-in-wastewater-treatment-plants },
      publisher={INTERNATIONAL ATOMIC ENERGY AGENCY },
      address={Vienna}
    }