@book{
      international1991iaea,
      title={Quality Control of Nuclear Medicine Instruments 1991},
      author={ },
      series={entity},
      number={602 },
      year={1991},
      isbn={ },
      url={/publications/858/quality-control-of-nuclear-medicine-instruments-1991 },
      publisher={INTERNATIONAL ATOMIC ENERGY AGENCY },
      address={Vienna}
    }